The normal boiling point for H2Se is higher than the normal boiling point for H2S .This can be explained by

A) larger dipole-dipole forces for H2Se . B) larger dispersion forces for H2Se . C) larger hydrogen-bond forces for H2Se . D) larger dipole-dipole forces, larger dispersion forces, and larger hydrogen-bond forces for H2Se . A) larger dipole-dipole forces for H2Se . B) larger dispersion forces for H2Se . C) larger hydrogen-bond forces for H2Se . D) larger dipole-dipole forces, larger dispersion forces, and larger hydrogen-bond forces for H2Se . B

Which of the following must be overcome during the boiling of acetonitrile,CH3CN? 1)dispersion forces 2)dipole-dipole forces 3)hydrogen bonds

A) 1 only B) 2 only C) 1 and 2 D) 1 and 3 E) 1, 2, and 3 A) 1 only B) 2 only C) 1 and 2 D) 1 and 3 E) 1, 2, and 3

Exam 12: Liquids, Solids, and Intermolecular Forces

How much heat is released when 105 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol,the enthalpy of fusion for water is 6.01 kJ/mol,the molar heat capacity of liquid water is 75.4 J/(mol ∙ °C),and the molar heat capacity of ice is 36.4 J/(mol ∙ °C).

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Question 1

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Consider the phase diagram below.If the dashed line at 1 atm of pressure is followed from 100 to 500°C,what phase changes will occur (in order of increasing temperature)?

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Question 2

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The normal boiling point for H₂Seis higher than the normal boiling point for H₂S.This can be explained by

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Question 3

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The boiling point of water is

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Question 4

Which of the following must be overcome during the boiling of acetonitrile,CH₃CN? 1)dispersion forces 2)dipole-dipole forces 3)hydrogen bonds

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Question 5

Define viscosity.

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Question 6

How much energy must be removed from a 94.4 g sample of benzene (molar mass= 78.11 g/mol)at 322.0 K to solidify the sample and lower the temperature to 205.0 K? The following physical data may be useful. ΔH_vap = 33.9 kJ/mol ΔH_fus = 9.8 kJ/mol C_liq = 1.73 J/g°C C_gas= 1.06 J/g°C C_sol = 1.51 J/g°C T_melting= 279.0 K T_boiling = 353.0 K

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Question 7

Sketch the phase diagram of benzene.Make sure to label the axes and the different phases of benzene.Use the physical data provided below. melting point = 279 K boiling point = 353 K T_c = 562 K P_c = 48.4 atm Triple Point = 0.05 atm,279 K

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Question 8

The enthalpy change for converting 10.0 g of ice at -25.0°C to water at 80.0°C is ________ kJ.The specific heats of ice,water,and steam are 2.09 J/gK,4.18 J/gK,and 1.84 J/gK,respectively.For H₂O,ΔH_fus = 6.01 kJ/mol,and ΔH_vap = 40.67 kJ/mol.

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Question 9

Determine the vapor pressure (in torr)of a substance at 36°C,whose normal boiling point is 84°C and has a ΔH_vapof 22.1 kJ/mol.

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Question 10

Identify the characteristics of a liquid.

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Question 11

The set of conditions at which point a phase boundary no longer exists is know as the

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Question 12

Why does the temperature of a substance stay constant during a phase change such as vaporization?

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Question 13

Describe sweating in humans.

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Question 14

Choose the substance with the highest viscosity.

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Question 15

Describe the differences in the meniscuses of water and mercury.

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Question 16

The resistance of a liquid to flow is known as

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Question 17

The normal boiling point of diethyl ether is 34.6°C.At a pressure of 1.3 atm,the boiling point

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Question 18

Place the following compounds in order of increasing strength of intermolecular forces. CO₂ H₂ H₂O

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Question 19

Which is expected to have the largest dispersion forces?

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Question 20

Showing 1 - 20 of 132

Exam 12: Liquids, Solids, and Intermolecular Forces

Consider the phase diagram below.If the dashed line at 1 atm of pressure is followed from 100 to 500°C,what phase changes will occur (in order of increasing temperature)?

The normal boiling point for H2Se is higher than the normal boiling point for H2S .This can be explained by

The boiling point of water is

Which of the following must be overcome during the boiling of acetonitrile,CH3CN? 1)dispersion forces 2)dipole-dipole forces 3)hydrogen bonds

Define viscosity.

Sketch the phase diagram of benzene.Make sure to label the axes and the different phases of benzene.Use the physical data provided below. melting point = 279 K boiling point = 353 K Tc = 562 K Pc = 48.4 atm Triple Point = 0.05 atm,279 K

The enthalpy change for converting 10.0 g of ice at -25.0°C to water at 80.0°C is ________ kJ.The specific heats of ice,water,and steam are 2.09 J/gK,4.18 J/gK,and 1.84 J/gK,respectively.For H2O,ΔHfus = 6.01 kJ/mol,and ΔHvap = 40.67 kJ/mol.

Determine the vapor pressure (in torr)of a substance at 36°C,whose normal boiling point is 84°C and has a ΔHvap of 22.1 kJ/mol.

Identify the characteristics of a liquid.

The set of conditions at which point a phase boundary no longer exists is know as the

Why does the temperature of a substance stay constant during a phase change such as vaporization?

Describe sweating in humans.

Choose the substance with the highest viscosity.

Describe the differences in the meniscuses of water and mercury.

The resistance of a liquid to flow is known as

The normal boiling point of diethyl ether is 34.6°C.At a pressure of 1.3 atm,the boiling point

Place the following compounds in order of increasing strength of intermolecular forces. CO2 H2 H2O

Which is expected to have the largest dispersion forces?

Essentials: Units, Measurements, and Problem Solving

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The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

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Chemical Bonding I

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Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

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The normal boiling point for H₂Seis higher than the normal boiling point for H₂S.This can be explained by

Which of the following must be overcome during the boiling of acetonitrile,CH₃CN? 1)dispersion forces 2)dipole-dipole forces 3)hydrogen bonds

Sketch the phase diagram of benzene.Make sure to label the axes and the different phases of benzene.Use the physical data provided below. melting point = 279 K boiling point = 353 K T_c = 562 K P_c = 48.4 atm Triple Point = 0.05 atm,279 K

The enthalpy change for converting 10.0 g of ice at -25.0°C to water at 80.0°C is ________ kJ.The specific heats of ice,water,and steam are 2.09 J/gK,4.18 J/gK,and 1.84 J/gK,respectively.For H₂O,ΔH_fus = 6.01 kJ/mol,and ΔH_vap = 40.67 kJ/mol.

Determine the vapor pressure (in torr)of a substance at 36°C,whose normal boiling point is 84°C and has a ΔH_vapof 22.1 kJ/mol.

Place the following compounds in order of increasing strength of intermolecular forces. CO₂ H₂ H₂O