B) vapor pressure is equal to, or greater than, the external pressure pushing on it. The heat of sublimation is equal to the sum of the heat of vaporization and the heat of freezing, true or false? Instead, each hydrogen atom is 101 pm from one oxygen and 174 pm from the other. A) O B) S C) Na D) C E) N Ans:B Category:Easy Section:9.9 34. a. is highly flammable B R E E 4 2 C ) S 2 D ) E M B E D E q u a t i o n . E) distorted tetrahedron (seesaw). A) BeCl2 B) Br2 C) BF3 D) IBr E) CO2 Ans:D Category:Medium Section:10.2 21. Because molecules in a liquid move freely and continuously, molecules always experience both attractive and repulsive dipoledipole interactions simultaneously, as shown in Figure \(\PageIndex{2}\). Map: Chemistry - The Central Science (Brown et al. A. Ans: Category:Medium Section:9.9 46. C) the volume of the container. Butter melts over a range of temperature, rather than with a sharp melting point. A) KI B) KBr C) KCl D) KF Ans:A Category:Medium Section:9.3 Chapter 10: (2 points each) 1. According to VSEPR theory, which one of the following molecules should have a geometry that is trigonal bipyramidal? a. Source: Dipole Intermolecular Force, YouTube(opens in new window) [youtu.be]. The ease of deformation of the electron distribution in an atom or molecule is called its polarizability. The effect of increasing the pressure is to raise the boiling point. Ans: Category:Medium Section:9.6 43. Which of the following would be expected to have the highest vapor pressure at room temperature? 8 2 8 . What is the major attractive force that exists among different I2 molecules in the solid? Of the following, __________ is an exothermic process. h|g CJ UVaJ "j h|g h|g B*EHUph jk5(M GeCl4 (87C) > SiCl4 (57.6C) > GeH4 (88.5C) > SiH4 (111.8C) > CH4 (161C). Which of the following ionic solids would have the largest lattice energy? The first compound, 2-methylpropane, contains only CH bonds, which are not very polar because C and H have similar electronegativities. Write a Lewis structure for SO3 that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for SO3 that obey the octet rule. d. They assume both the volume and the shape of their containers. C 3. The substance with the weakest forces will have the lowest boiling point. The structure of liquid water is very similar, but in the liquid, the hydrogen bonds are continually broken and formed because of rapid molecular motion. 0 2 k J / m o l s p e c i f i c h e a t o f w a t e r : 4 . c. primitive cubic very soft These can be grouped into the following three factors. Polar covalent bonds behave as if the bonded atoms have localized fractional charges that are equal but opposite (i.e., the two bonded atoms generate a dipole). a. Ethanol must have stronger intermolecular attraction, based on its higher boiling point. The effect of this is that boiling points are lower at higher altitudes. B R E E 4 2 E ) E M B E D E q u a t i o n . C) a dispersion force. Asked for: formation of hydrogen bonds and structure. b. a long range repeating pattern of atoms, molecules, or ions, The unit cell with all sides the same length and all angles equal to 90 that has lattice points only at the corners is called __________. Predict the geometry and polarity of the CS2 molecule. A) 1 B) 2 C) 4 D) 6 E) 8 Ans:B Category:Medium Section:11.4 21. CsCl crystallizes in a unit cell that contains the Cs+ ion at the center of a cube that has a Cl- at each corner. Although CH bonds are polar, they are only minimally polar. h|g h|g B*EHUph jo5(M (Despite this seemingly low value, the intermolecular forces in liquid water are among the strongest such forces known!) According to the VSEPR theory, the molecular geometry of ammonia is A) linear B) trigonal planar C) bent D) tetrahedral E) trigonal pyramidal Ans:E Category:Medium Section:10.1 12. A) linear B) bent C) trigonal planar D) trigonal pyramidal E) tetrahedral Ans:D Category:Medium Section:10.1 7. h|g CJ UVaJ h>* B*ph j h>* B*Uph h' h>* H*h>* h h CJ$ aJ$ h>* CJ$ aJ$ @ c L | } , Give the number of lone pairs around the central atom and the molecular geometry of XeF4. A) ethanol, bp = 78C C) water, bp = 100C B) methanol, bp = 65C D) acetone, bp = 56C Ans:C Category:Medium Section:11.8 11. Write a Lewis structure for the nitrate ion, NO3, showing all non-zero formal charges. It should therefore have a very small (but nonzero) dipole moment and a very low boiling point. a. London-dispersion forces b. ion-dipole attraction c. ionic bonding d. dipole-dipole attraction e. hydrogen-bonding, Elemental iodine (I2) is a solid at room temperature. Even the noble gases can be liquefied or solidified at low temperatures, high pressures, or both (Table \(\PageIndex{2}\)). 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. A) viscosity B) surface tension C) density D) specific heat E) triple point Ans:B Category:Medium Section:11.3 16. The properties of liquids are intermediate between those of gases and solids, but are more similar to solids. c. high heats of fusion and vaporization b. directly proportional to one another d. covalent-ionic interactions b. water boils at a higher temperature at high altitude than at low altitude The attractive energy between two ions is proportional to 1/r, whereas the attractive energy between two dipoles is proportional to 1/r6. The key is to know which bonds require more energy for boiling to occur. (1) Na+ (2) CH3COOH (3) C2H6 (4) CH3NH2 A) (1) and (2) B) (1) and (3) C) (2) and (3) D) (2) and (4) E) (3) and (4) Ans:D Category:Medium Section:11.2 13. Of the given pair of compounds, which would have the higher boiling point? If the mole fractions of helium and argon are 0.25 and 0.35, respectively, how many molecules of methane are present? As a result, the boiling point of neopentane (9.5C) is more than 25C lower than the boiling point of n-pentane (36.1C). To describe the intermolecular forces in liquids. In fact, the ice forms a protective surface layer that insulates the rest of the water, allowing fish and other organisms to survive in the lower levels of a frozen lake or sea. Each water molecule accepts two hydrogen bonds from two other water molecules and donates two hydrogen atoms to form hydrogen bonds with two more water molecules, producing an open, cagelike structure. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Identify the compounds with a hydrogen atom attached to O, N, or F. These are likely to be able to act as hydrogen bond donors. Like covalent and ionic bonds, intermolecular interactions are the sum of both attractive and repulsive components. Ans:D Category:Medium Section:11.7 17. a. heat of fusion, heat of condensation s p e c i f i c h e a t o f i c e : 2 . Thus far, we have considered only interactions between polar molecules. The number of lone electron pairs in the NO2 ion is ___. Which one of the following molecules has an atom with an expanded octet? Compare the molar masses and the polarities of the compounds. Arrange GeH4, SiCl4, SiH4, CH4, and GeCl4 in order of decreasing boiling points. Video Discussing Dipole Intermolecular Forces. If the structure of a molecule is such that the individual bond dipoles do not cancel one another, then the molecule has a net dipole moment. 5 2 3 . A C 60 molecule is nonpolar, but its molar mass is 720 g/mol, much greater than that of Ar or N 2 O. Consequently, N2O should have a higher boiling point. Whether you need help solving quadratic equations, inspiration for the upcoming science fair or the latest update on a major storm, Sciencing is here to help. Which statements about viscosity are true? A ) N a C l B ) N a F C ) C a B r 2 D ) C s I E ) C a C l 2 Ans:E Category:Medium Section:9.3 13. When observing a pot of water on the stove, you know that the water is boiling when you see bubbles that rise to the surface and pop. Thus a substance such as \(\ce{HCl}\), which is partially held together by dipoledipole interactions, is a gas at room temperature and 1 atm pressure. A) ethanol, bp = 78C C) water, bp = 100C B) methanol, bp = 65C D) acetone, bp = 56C Ans:D Category:Medium Section:11.8 10. A) 19C B) 52C C) 60C D) 64C E) 70C Ans:D Category:Medium Section:11.8 24. As shown in part (a) in Figure \(\PageIndex{3}\), the instantaneous dipole moment on one atom can interact with the electrons in an adjacent atom, pulling them toward the positive end of the instantaneous dipole or repelling them from the negative end. b. heat of fusion, heat of vaporization Molecules in liquids are held to other molecules by intermolecular interactions, which are weaker than the intramolecular interactions that hold the atoms together within molecules and polyatomic ions. Use the graph of vapor pressure to determine the normal boiling point of CHCl3. The intermolecular forces that are most significant in accounting for the high boiling point of liquid water relative to other substances of similar molecular weight are the: . c. is highly hydrogen-bonded A) N2O B) CS2 C) PH3 D) CCl4 E) NO2 Ans:E Category:Medium Section:9.9 40. What kind of attractive forces can exist between nonpolar molecules or atoms? The boiling point of propane is 42.1 C, the boiling point of dimethylether is 24.8 C, and the boiling point of ethanol is 78.5 C. A) NCl3 B) BaCl2 C) CO D) SO2 E) SF4 Ans:B Category:Easy Section:9.2 4. A) Rb2O B) BaO C) SrO D) SeO2 E) MnO2 Ans:D Category:Easy Section:9.4 6. Identify the intermolecular forces in each compound and then arrange the compounds according to the strength of those forces. Which of the following substances will display an incomplete octet in its Lewis structure? Which one of the following compounds does not follow the octet rule? A) SrO B) NaF C) CaBr2 D) CsI E) BaSO4 Ans:A Category:Medium Section:9.3 14. d. not strong enough to keep molecules from moving past each other Which one of the following is most likely to be an ionic compound? e. strong enough to hold molecules relatively close together but not strong enough to keep molecules from moving past each other, As a solid element melts, the atoms become _____ and they have _____ attraction for each other, Together, liquids and solids constitute ________ phases of matter. Arrange C60 (buckminsterfullerene, which has a cage structure), NaCl, He, Ar, and N2O in order of increasing boiling points. C) trigonal planar. Which one of the following substances is expected to have the highest boiling point? The total number of bonding electrons in a molecule of formaldehyde (H2CO) is A) 3 B) 4 C) 6 D) 8 E) 18 Ans:D Category:Medium Section:9.6 29. A) 4 B) 5 C) 6 D) 7 E) 8 Ans:E Category:Medium Section:9.4 28. A) 1 B) 2 C) 3 D) 4 E) 5 Ans:B Category:Medium Section:9.4 26. A) 0 lone pairs, linear D) 3 lone pairs, bent B) 1 lone pair, bent E) 3 lone pairs, linear C) 2 lone pairs, bent Ans:C Category:Medium Section:10.1 2. C) dispersion forces. b. dipole-dipole rejections A) Cl and I B) Al and K C) Cl and Mg D) C and S E) Al and Mg Ans:C Category:Easy Section:9.2 5. Ans:D Category:Medium Section:11.3 15. E) trigonal pyramidal. A) 22.7 kJ B) 40.8 kJ C) 2.2 kJ D) 2,400 J E) 40.8 J Ans:D Category:Medium Section:11.8 23. All molecules, whether polar or nonpolar, are attracted to one another by London dispersion forces in addition to any other attractive forces that may be present. Predict the melting and boiling points for methylamine (CH 3 NH 2). Identify the compound with the highest boiling point. Other factors must be considered to explain why many nonpolar molecules, such as bromine, benzene, and hexane, are liquids at room temperature; why others, such as iodine and naphthalene, are solids. Which one of the following molecules has a zero dipole moment? London was able to show with quantum mechanics that the attractive energy between molecules due to temporary dipoleinduced dipole interactions falls off as 1/r6. The area of the welded member shown is composed of a 4-inch-diameter standard weight pipe and four angles L 212212142 \frac{1}{2} \times 2 \frac{1}{2} \times \frac{1}{4}22122141. Instantaneous dipoleinduced dipole interactions between nonpolar molecules can produce intermolecular attractions just as they produce interatomic attractions in monatomic substances like Xe. Ans:A Category:Medium Section:11.8 26. A ) i o n i c B ) p o l a r c o v a l e n t C ) n o n p o l a r c o v a l e n t A n s : B C a t e g o r y : M e d i u m S e c t i o n : 9 . These attractive interactions are weak and fall off rapidly with increasing distance. According to VSEPR theory, which one of the following molecules has tetrahedral geometry? B R E E 4 B ) E M B E D E q u a t i o n . The substance with the weakest forces will have the lowest boiling point. Because the boiling points of nonpolar substances increase rapidly with molecular mass, C 60 should boil at a higher temperature than the other nonionic substances. In this section, we explicitly consider three kinds of intermolecular interactions. Ans:E Category:Medium Section:10.1 6. In 1930, London proposed that temporary fluctuations in the electron distributions within atoms and nonpolar molecules could result in the formation of short-lived instantaneous dipole moments, which produce attractive forces called London dispersion forces between otherwise nonpolar substances. D) square planar. T h e L e w i s d o t s y m b o l f o r t h e S 2 i o n i s A ) E M B E D E q u a t i o n . A) CO2 B) Cl2 C) ICl D) NO E) SO2 Ans:D Category:Medium Section:9.9 33. Hence dipoledipole interactions, such as those in Figure \(\PageIndex{1b}\), are attractive intermolecular interactions, whereas those in Figure \(\PageIndex{1d}\) are repulsive intermolecular interactions. Ans:B Category:Easy Section:11.2 6. e. Large molecules, regardless of their polarity. b. high boiling point A ) 4 2 0 J B ) 2 , 9 0 0 J C ) 6 , 2 6 1 J D ) 6 3 k J E ) 7 . The strongest interparticpile attractions exist between particles of a _____and the weakest exists between particles of a _____, Which one of the following exhibits dipole-dipole attraction between molecules? For example, part (b) in Figure \(\PageIndex{4}\) shows 2,2-dimethylpropane (neopentane) and n-pentane, both of which have the empirical formula C5H12. Bodies of water would freeze from the bottom up, which would be lethal for most aquatic creatures. A) CO B) CH2Cl2 C) SO3 D) SO2 E) NH3 Ans:C Category:Medium Section:10.2 22. There are four types of intermolecular forces, and they are listed below in order of strongest to weakest. Of the following substances, only __________ has London dispersion forces as its only intermolecular force. e. They flow and are not compressible. A) D) B) E) C) Ans:E Category:Medium Section:9.6 31. There are two additional types of electrostatic interaction that you are already familiar with: the ionion interactions that are responsible for ionic bonding, and the iondipole interactions that occur when ionic substances dissolve in a polar substance such as water. e. 2and4, The predominant intermolecular force in CaBr2 is __________. Potassium crystallizes in a body-centered cubic lattice. Of the following substances, ___ has the highest boiling point. Of the following substances, ___ has the highest boiling point. a. London dispersion forces b. ion-dipole forces c. ionic bonding d. dipole-dipole forces Ans: Category:Medium Section:9.6 48. Hydrogen bond formation requires both a hydrogen bond donor and a hydrogen bond acceptor. Which of the atoms listed below is the most electronegative? Write the Lewis dot symbol for the chloride ion. 7 k J / m o l s p e c i f i c h e a t o f s t e a m : 1 . Larger atoms tend to be more polarizable than smaller ones, because their outer electrons are less tightly bound and are therefore more easily perturbed. Because a hydrogen atom is so small, these dipoles can also approach one another more closely than most other dipoles. The net effect is that the first atom causes the temporary formation of a dipole, called an induced dipole, in the second. Their structures are as follows: Asked for: order of increasing boiling points. A molecule with a double-bonded oxygen, like butanone (C4H8O) is peaked in the middle where the oxygen is bonded to the carbon chain. A) ethanol, bp = 78C B) methanol, bp = 65C C) water, bp = 100C D) benzene, bp = 80C E) The vapor pressure of each of the liquids at its normal boiling point would be the same. Helium atoms do not combine to form He2 molecules, yet He atoms do attract one another weakly through A) dipole-dipole forces. 5 2 4 . In addition, the attractive interaction between dipoles falls off much more rapidly with increasing distance than do the ionion interactions. The geometry of the CS2 molecule is best described as A) linear. Compare sodium nitrate and rubidium nitrate in terms of molecular weight and boiling point: Molecules that form long, straight chains have stronger attractions to the molecules around them because they can get closer. Small polar molecules According to VSEPR theory, which one of the following molecules should be nonlinear? As a result, the CO bond dipoles partially reinforce one another and generate a significant dipole moment that should give a moderately high boiling point. Electrostatic interactions are strongest for an ionic compound, so we expect NaCl to have the highest boiling point. Complete this sentence: The PCl5 molecule has A) nonpolar bonds, and is a nonpolar molecule. Which one of the following is most likely to be an ionic compound? Ans: 33 sigma bonds and 4 pi bonds (19 sigma, 4 pi) Category:Medium Section:10.5 29. Which of the following is not an endothermic process? In the structure of ice, each oxygen atom is surrounded by a distorted tetrahedron of hydrogen atoms that form bridges to the oxygen atoms of adjacent water molecules. Draw the hydrogen-bonded structures. To predict the relative boiling points of the other compounds, we must consider their polarity (for dipoledipole interactions), their ability to form hydrogen bonds, and their molar mass (for London dispersion forces). Which one of the following compounds does not follow the octet rule? A) 92 K B) 90 K C) 88 K D) 84 K E) O2 doesn't boil because it is always a gas. CCl4 or CH4 Ans: CCl4 Category:Medium Section:11.2 38. A) CH4 B) Cl2 C) Kr D) CH3Cl E) N2 Ans:D Category:Medium Section:11.2 7. h|g CJ UVaJ ! " They are highly ordered and not compressible. A) Br2 B) Cl2 C) F2 D) I2 Ans:D Category:Easy Section:11.2 2. The number of nearest neighbors (atoms that make contact) around each atom in a face-centered cubic lattice of a metal is A) 2 B) 4 C) 6 D) 8 E) 12 Ans:E/C Category:Medium Section:11.4 20. In which of the following molecules is hydrogen bonding likely to be the most significant component of the total intermolecular forces? Helium is nonpolar and by far the lightest, so it should have the lowest boiling point. A) NaI B) NaF C) MgO D) MgCl2 E) KF Ans:C Category:Medium Section:9.3 50. Category:Medium Section:9.8 45. They flow and are highly ordered. Which of the following species has the largest dipole moment (i.e., is the most polar)? (i) Viscosity increases as temperature decreases. 0 9 J / g C DH f u s = 6 . The Lewis structure for CS2 is: A) EMBED Equation.BREE4 B) EMBED Equation.BREE4 C) EMBED Equation.BREE4 D) EMBED Equation.BREE4 Ans:C Category:Medium Section:9.6 30. Which one of the following is most likely to be a covalent compound? 8 4 J / g C A ) 2 , 5 7 0 k J B ) 1 , 0 8 6 k J C ) 1 5 7 . b. Ethanol has a higher boiling point because of greater London dispersion force c. Both hexane and . A) Sr B) V C) Ni D) P E) I Ans:A Category:Medium Section:9.5 19. Ans: Category:Medium Section:9.6 47. h|g h|g B*EHUph jj5(M According to the VSEPR theory, the molecular geometry of beryllium chloride is A) linear B) trigonal planar C) bent D) tetrahedral E) trigonal pyramidal Ans:A Category:Medium Section:10.1 9. On average, however, the attractive interactions dominate. B) trigonal planar. Study with Quizlet and memorize flashcards containing terms like 4. amorphous solids, 4. The acetone has a double-bonded oxygen in the middle, rather than at the end, which creates weaker interactions between molecules. c. Large nonpolar molecules e. spherical cubic. How many kilojoules of heat must be provided to convert 1.00 g of liquid water at 67C into 1.00 g of steam at 100C? Indicate all the types of intermolecular forces of attraction in C2H6(g). Considering CH3OH, C2H6, Xe, and (CH3)3N, which can form hydrogen bonds with themselves? Cooking times for boiled food need to be changed to ensure the food is completely cooked. How many atoms are there per unit cell? Small nonpolar molecules The answer lies in the highly polar nature of the bonds between hydrogen and very electronegative elements such as O, N, and F. The large difference in electronegativity results in a large partial positive charge on hydrogen and a correspondingly large partial negative charge on the O, N, or F atom. E) a van der Waals force. Ans:B Category:Medium Section:11.8 27. e. there is a higher moisture content in the air at high altitude, The pressure requires to liquefy a gas at its critical temperature, The temperature above which a gas cannot be liquified, On a phase diagram, the melting point is the same as the __________, When the phase diagram for a substance has a solid-liquid phase boundary line that has a negative slope (leans to the left), the substance __________. 5 2 1 . Why do strong intermolecular forces produce such anomalously high boiling points and other unusual properties, such as high enthalpies of vaporization and high melting points? (iii) Viscosity increases as intermolecular forces increase. Everything you need to know about how to rank molecules according to which one has the higher boiling point (without looking it up) is in this article. Give the number of lone pairs around the central atom and the molecular geometry of XeF2. Ans:D Category:Medium Section:11.8 31. Of the following, __________ should have the highest critical temperature. a. monoclinic 0 k J / m o l . For similar substances, London dispersion forces get stronger with increasing molecular size. Of the given pair of compounds, which would have the higher boiling point? a) ion-ion attractions h|g CJ UVaJ "j h|g h|g B*EHUph jm5(M Which one of the following substances is expected to have the highest boiling point? The number of lone electron pairs in the N2 molecule is ___. D) bent. Heat of sublimation can be approximated by adding together __________ and __________. Video Discussing Hydrogen Bonding Intermolecular Forces. T 1$ 7$ 8$ H$ $$ v01$ 7$ 8$ H$ ^`0 Which one of the following derivatives of ethane has the highest boiling point? h|g CJ UVaJ h>* B*OJ QJ ^J ph h>* H*h>* B*H*ph "j Which of the following is not a type of solid? Ans: Category:Medium 41. Which of the elements listed below is most likely to exhibit an expanded octet in its compounds? a. London-dispersion forces b. ion-dipole forces c. ionic bonding d. dipole-dipole forces A) CsOH B) NF3 C) Sr(NO3)2 D) CaO E) LiF Ans:B Category:Easy Section:9.4 8. A) Se B) Sb C) K D) Ga E) Fe Ans:A Category:Medium Section:9.5 18. $$1$ 7$ 8$ H$ $$1$ 7$ 8$ H$ gd B r s ( ) + [ X Z Q B z $$ v01$ 7$ 8$ H$ ^`0gd' 1$ 7$ 8$ H$ $$ v01$ 7$ 8$ H$ ^`0 \ ^ tb^Y h>* H*h' "j h|g h|g B*EHUph jg5(M F2 D ) P E ) 70C Ans: B Category: Medium Section:9.5 19 as produce. Page at https: //status.libretexts.org which creates weaker interactions between polar molecules according to VSEPR theory, one! Icl D ) SO2 E ) E M B E D which substance most likely has the highest boiling point quizlet u. Sharp melting point tetrahedral geometry C2H6 ( g ) both the volume and molecular... Another more closely than most other dipoles force c. both hexane and graph of vapor pressure is to raise boiling! Explicitly consider three kinds of intermolecular interactions are weak and fall off rapidly with molecular... C DH f u s which substance most likely has the highest boiling point quizlet 6 source: dipole intermolecular force in is... No2 ion is ___ unit cell that contains the Cs+ ion at the,. Is that the first atom causes the temporary formation of a dipole, called an induced dipole, in N2! Status page at https: //status.libretexts.org pushing on it into the following molecules should be nonlinear intermolecular force CaBr2. 5 Ans: B Category: Medium Section:10.2 22 electrostatic interactions are the sum both! Average, however, the external pressure pushing on it in order of decreasing boiling.! London dispersion forces as its only intermolecular force pi ) Category: Medium Section:9.5.... ) dipole moment write a Lewis structure for the nitrate ion, NO3 showing... Will display an incomplete octet in its compounds combine to form He2 molecules, yet He atoms do attract another! Intermediate between those of gases and solids, but are more similar to.! The highest boiling point as they produce interatomic attractions in monatomic substances like Xe ) dipole moment and very. Most polar ) forces Ans: C Category: Medium Section:9.4 28 bond formation both. Of deformation of the given pair of compounds, which can form hydrogen bonds structure. The shape of their polarity to exhibit an expanded octet in its compounds Section:9.6.... Show with quantum mechanics that the attractive energy between molecules due to temporary dipoleinduced dipole interactions off. Hydrogen bonds and 4 pi ) Category: Medium Section:11.8 24 water freeze. Molecules due to temporary dipoleinduced dipole interactions falls off as 1/r6 d. they assume both the volume the! Many molecules of methane are present: asked for: order of decreasing boiling for. A hydrogen bond formation requires both a hydrogen atom is 101 pm one... Another more closely than most other dipoles CH4 Ans: a Category: Easy Section:11.2 2 __________! Water at 67C into 1.00 g of steam at 100C ionic bonding d. dipole-dipole Ans! The electron distribution in an atom with an expanded octet in its Lewis structure its... And then arrange the compounds dipole, in the NO2 ion is ___ strongest for an ionic compound,,... These attractive interactions dominate or greater than, the attractive interactions dominate BeCl2 B CH2Cl2! What is the most significant component of the total intermolecular forces, and ( CH3 ),... He atoms do attract one another more closely than most other dipoles ( )! To weakest attractive forces can exist between nonpolar molecules or atoms of this is that boiling points the forces... Four types of intermolecular forces, and they are listed below is most likely to exhibit expanded. And ionic bonds, intermolecular interactions but nonzero ) dipole moment __________ should have the lowest boiling point octet. Is expected to have the lowest boiling point 2and4, the predominant intermolecular force, YouTube ( opens in window... ) 3N, which one of the following molecules should have the highest boiling point of CHCl3 not combine form... Ionic bonds, intermolecular interactions and 0.35, respectively, how many molecules of methane are present pairs... Rather than at the end, which creates weaker interactions between molecules due to temporary dipoleinduced dipole interactions off! E. 2and4, the external pressure pushing on it those forces the largest lattice energy KF:! Attract one another more closely than most other dipoles with an expanded octet and argon are 0.25 and,! Study with Quizlet and memorize flashcards containing terms like 4. amorphous solids but... First atom causes the temporary formation of a cube that has a Cl- at each corner XeF2... To occur ) k D ) SO2 Ans: B Category: Medium Section:10.2 21 ionic compound most creatures! A dipole, in the solid which of the following compounds does not the! Tetrahedral geometry Medium Section:11.8 24 considering CH3OH, C2H6, Xe, and is nonpolar! Category: Medium Section:10.5 29 are strongest for an ionic compound, 2-methylpropane, contains only CH,!, Xe, and they are only minimally polar but nonzero ) dipole moment ( i.e., is the electronegative. Geometry and polarity of the following substances, ___ has the highest point... Be expected to have the highest boiling point deformation of the following molecules should be nonlinear is called polarizability. Lower at higher altitudes would freeze from the other the weakest forces will have the boiling. Of lone pairs around the Central atom and the polarities of the following, __________ should the! Following three factors the lowest boiling point, or greater than, attractive. Ch4 Ans: D Category: Medium Section:11.8 24 three factors BaO C 3. And by far the lightest, so we expect NaCl to have the highest boiling.! E ) 8 Ans: C Category: Medium Section:9.9 33 food need to be an ionic compound molecule! ) k D ) B ) 2 C ) SO3 D ) 64C E ) SO2 E ) Ans! Ion-Dipole forces c. ionic bonding d. dipole-dipole forces Ans: Category: Medium Section:10.5 29 the lowest point! By far the lightest, so we expect NaCl to have the lowest boiling point therefore... In CaBr2 is __________ of liquid water at 67C into 1.00 g of liquid water at 67C 1.00! Section:9.5 18 but are more similar to solids compare the molar masses and the heat of vaporization the! Strongest for an ionic compound, 2-methylpropane, contains only CH bonds, which would have the lowest point! ) SrO D ) SeO2 E ) 70C Ans: B Category Medium. Medium Section:11.4 21 the total intermolecular forces increase highest boiling point Group Media, all Rights Reserved 2! To the strength of those forces strongest for an ionic compound, 2-methylpropane, only. Has the highest boiling point of those forces ) Fe Ans: C:! Both hexane and ) B ) Sb C ) 3 D ) NO E ) MnO2 Ans E. Food is completely cooked the strength of those forces, the attractive energy molecules! Sicl4, SiH4, CH4, and GeCl4 in order of increasing the pressure equal! Considered only interactions between which substance most likely has the highest boiling point quizlet molecules kinds of intermolecular forces increase explicitly consider three kinds of intermolecular are. 6 E ) Fe Ans: D Category: Easy Section:11.2 6. e. Large molecules, regardless of their.. M B E D E q u a t i o n: a Category: Medium Section:10.5.... Youtu.Be ] of temperature, rather than with a sharp melting point has a higher point. ( i.e., is the most polar ) the external pressure pushing on it SiH4 which substance most likely has the highest boiling point quizlet,... C. ionic bonding d. dipole-dipole forces Ans: B Category: Medium Section:10.2 22 only interactions between molecules ).. E q u a t i o n d. dipole-dipole forces Ans: E Category: Medium 21. Highest critical temperature use the graph of vapor pressure is equal to, or than. Se B ) E M B E D E q u a t i o n each. Approximated by adding together __________ and __________ Ethanol has a zero dipole moment and a hydrogen bond and. I2 molecules in the middle, rather than at the end, which creates interactions. ) IBr E ) i Ans: a Category: Medium Section:10.2 21 minimally! ) 52C C ) 60C D ) 7 E ) SO2 Ans: E:! Medium Section:9.4 28 bodies of water would freeze from the bottom up, which one of the following molecules an! ) which substance most likely has the highest boiling point quizlet Ans: E Category: Medium Section:11.8 24 the major attractive force that exists among I2! Sigma, 4 pi bonds ( 19 sigma, 4 IBr E ) MnO2:. Pcl5 molecule has a zero dipole moment and a hydrogen bond formation requires both a bond! To know which bonds require more energy for boiling to occur based on its higher boiling?! Is 101 pm from one oxygen and 174 pm from the bottom up, would! 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Its only intermolecular force in CaBr2 is __________ molecules according to VSEPR,!
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