Slide 1 / 59 Slide 2 / 59 1 The strongest interparticle 2 Which - PDF document

Slide 1 / 59 Slide 2 / 59 1 The strongest interparticle 2 Which one of the following attractions exist between exhibits dipole-dipole particles of a __________ attraction between and the weakest molecules? interparticle attractions exist between particles of A XeF4 a __________. B AsH3 C CO2 D BCl3 A solid, liquid E Cl2 B solid, gas C liquid, gas D liquid, solid E gas, solid Slide 3 / 59 Slide 4 / 59 3 Hydrogen bonding is a 4 When NaCl dissolves in water, aqueous Na + and Cl - special case of ions result. The force of __________. attraction that exists between Na + and H 2 Ois called a(n) __________ A London-dispersion forces interaction. B ion-dipole attraction C dipole-dipole attractions D ion-ion interactions E none of the above A dipole-dipole B ion-ion C hydrogen bonding D ion-dipole E London dispersion force Slide 5 / 59 Slide 6 / 59 5 Of the following 6 What is the predominant intermolecular force in substances, only __________ has London CBr 4 ? dispersion forces as its only intermolecular force. A London-dispersion forces B ion-dipole attraction C ionic bonding A CH 3 OH D dipole-dipole attraction B NH 3 E hydrogen-bonding C H 2 S D CH 4 E HCl

Slide 7 / 59 Slide 8 / 59 7 Of the following 8 Which of the following has substances, only dispersion forces as its __________ has London only intermolecular force? dispersion forces as the only intermolecular force. A CH 4 B HCl C C 6 H 13 NH 2 A CH 3 OH D NaCl B NH 3 E CH 3 Cl C H 2 S D Kr E HCl Slide 9 / 59 Slide 10 / 59 9 Elemental iodine (I 2 ) is a 10 The predominant solid at room temperature. intermolecular force in What is the major attractive (CH 3 ) 2 NH is __________. force that exists among different I2 molecules in the solid? A London dispersion forces B ion-dipole forces C ionic bonding D dipole-dipole forces A London dispersion forces E hydrogen bonding B dipole-dipole rejections C ionic-dipole interactions D covalent-ionic interactions E dipole-dipole attractions Slide 11 / 59 Slide 12 / 59 11 C 12 H 26 molecules are held 12 Which of the following has together by __________. hydrogen bonding as its only intermolecular force? A ion-ion interactions A HF B hydrogen bonding B H 2 O C ion-dipole interactions C C 6 H 13 NH 2 D dipole-dipole interactions D C 5 H 11 OH E dispersion forces E None, all exhibit dispersion forces.

Slide 13 / 59 Slide 14 / 59 13 Which one of the following 14 Which one of the following substances will have substances will not have hydrogen bonding as one hydrogen bonding as one of its intermolecular of its intermolecular forces? forces? C A B D E D B C E A Slide 15 / 59 Slide 16 / 59 15 The ease with which the 16 __________ are charge distribution in a particularly polarizable. molecule can be distorted by an external electrical A Small nonpolar molecules field is called the B Small polar molecules __________. C Large nonpolar molecules D Large polar molecules Large molecules, regardless of their A electronegativity E polarity, B hydrogen bonding C polarizability D volatility E viscosity Slide 17 / 59 Slide 18 / 59 18 Based on the following 17 In which of the following information, which molecules is hydrogen compound has the bonding likely to be the strongest intermolecular most significant forces? component of the total intermolecular forces? A Argon B Benzene Ethanol C A CH 4 D Water B C 5 H 11 OH Methane E C C 6 H 13 NH 2 Substance ΔHvap (kJ/mol) D CH 3 OH E CO 2 Argon (Ar) 6.3 Benzene (C6H6) 31.0 Ethanol (C2H5OH) 39.3 Water (H 2 O) 40.8 Methane (CH 4 ) 9.2

Slide 19 / 59 Slide 20 / 59 19 Based on molecular mass 20 Which one of the following and dipole moment of the should have the lowest five compounds in this boiling point? table, which should have the highest boiling point? A PH3 B H2S C HCl A CH 3 CH 2 CH 3 SiH4 D B CH 3 OCH 3 E H2O C CH 3 Cl D CH 3 CHO E CH 3 CN Slide 21 / 59 Slide 22 / 59 21 Of the following 22 Of the following, substances, __________ __________ has the has the highest boiling highest boiling point. point. A N2 A H2O B Br2 B CO2 C H2 C CH4 D Cl2 E O2 D Kr E NH3 Slide 23 / 59 Slide 24 / 59 23 Which one of the following 24 The intermolecular force(s) responsible for the fact that derivatives of ethane has the highest boiling point? CH4has the lowest boiling point in the set CH 4 , SiH 4 , GeH 4 , SnH 4 is/are __________. A C 2 Br 6 B C 2 F 6 C C 2 I 6 D C 2 Cl 6 A hydrogen bonding E C 2 H 6 B dipole-dipole interactions C London dispersion forces mainly hydrogen bonding but also D dipole-dipole interactions mainly London-dispersion forces but E also dipole-dipole interactions

Slide 25 / 59 Slide 26 / 59 25 What intermolecular force 26 What types of is responsible for ice being intermolecular forces exist between HI and H 2 S? less dense than liquid water? A dipole-dipole and ion-dipole A London dispersion forces dispersion forces, dipole-dipole, and B ion-dipole B dipole-dipole forces dispersion forces, hydrogen bonding, C ion-dipole forces C dipole-dipole, and ion-dipole D hydrogen bonding D dispersion forces and dipole-dipole E ionic bonding dispersion forces, dipole-dipole, and E ion-dipole Slide 27 / 59 Slide 28 / 59 27 What types of Of the following, __________ is an 28 intermolecular forces exist exothermic process. between Br 2 and CCl 4 ? A dispersion forces A melting dipole-dipole and ion-dipole B B subliming C freezing dispersion forces, hydrogen bonding, dipole- C dipole, and ion-dipole D boiling E All are exothermic. D dispersion forces and dipole-dipole dispersion forces, dipole-dipole, and E ion-dipole Slide 29 / 59 Slide 30 / 59 29 Which of the following is 30 The direct change of a NOT a phase change? substance from a solid to a gas is called _____. A melting B diffusion A boiling C sublimation B evaporation D vaporization C sublimation D condensation

Slide 31 / 59 Slide 32 / 59 31 The escape of gas 32 The first particles to molecules from the evaporate from a liquid are surface of an uncontained _____. liquid is known as _____. A those with the lowest kinetic energy A evaporation those farthest from the surface of the B liquid B condensation C those with the highest kinetic energy C boiling D sublimation Slide 33 / 59 Slide 34 / 59 33 Which of the following will 34 A volatile liquid is one that evaporate faster? __________. water at 20 o C A A is highly flammable water at 40 o C B B is highly viscous water at 0 o C C is highly hydrogen-bonded C D is highly cohesive D all of these will evaporate at the same rate E readily evaporates Slide 35 / 59 Slide 36 / 59 35 Volatility and vapor 36 If a liquid is sealed in a pressure are __________. container and kept at constant temperature, how does its vapor pressure A inversely proportional to one another change over time? B directly proportional to one another C not related D the same thing It rises at first, then remains A constant. E both independent of temperature B It rises at first, then falls. C It rises continuously.

Slide 37 / 59 Slide 38 / 59 37 An increase in the 38 When the vapor pressure temperature of a contained of a liquid equals the liquid _____. atmospheric pressure, the liquid _____. has no effect on the kinetic energy of A the liquid A freezes causes fewer particles to escape the B B boils surface of the liquid C condenses decreases the vapor pressure of the C D No change is observed. liquid causes the vapor pressure above the D liquid to increase Slide 39 / 59 Slide 40 / 59 39 Water could be made to 40 Some things take longer to boil at 105°C instead of cook at high altitudes than 100°C by _____. at low altitudes because _____. increasing the air pressure on the A water water boils at a lower temperature at A decreasing the pressure on the high altitude than at low altitude B water water boils at a higher temperature B C applying a great deal of heat at high altitude than at low altitude heat isn't conducted as well in low C density air natural gas flames don't burn as hot D at high altitudes there is a higher moisture content in E the air at high altitude Slide 41 / 59 Slide 42 / 59 42 Based on this figure, the 41 What is the pressure when boiling point of diethyl a liquid is boiling at its ether under an external normal boiling point? pressure of 1.32 atm is _______°C. A 505 kPa B 101 kPa C 202 kPa A 10 D 0 kPa B 20 C 30 D 40 E 0