For each of the given pair of compounds, member having the higher boiling point should be identified. Concept introduction: Intermolecular forces are much weaker than the chemical bonds but they are largely responsible for the structure of any solid or condensed phase. Dispersive forces are intermolecular attractive forces arisen from an instantaneous dipole-induced dipole attraction between molecules. In the molecules containing hydrogen attached to a highly electronegative atom, the intermolecular electrostatic attraction forces are very strong between the hydrogen of one molecule and the electronegative atom of another, this is called hydrogen bonding. Vapor pressure decreases and boiling point increases with increase in strength of intermolecular forces.

Question

Which type of intermolecular force accounts for each ofthese differences? (a) CH3OH boils at 65 °C; CH3SH boils at6 °C. (b) Xe is a liquid at atmospheric pressure and 120 K,whereas Ar is a gas under the same conditions. (c) Kr,atomic weight 84 amu, boils at 120.9 K, whereas Cl2, molecularweight about 71 amu, boils at 238 K. (d) Acetone boilsat 56 °C, whereas 2-methylpropane boils at -12 °C.

Answer 1

Question

Chapter 8, Problem 8.49PAE

Interpretation Introduction

Interpretation:

For each of the given pair of compounds, member having the higher boiling point should be identified.

Concept introduction:

Intermolecular forces are much weaker than the chemical bonds but they are largely responsible for the structure of any solid or condensed phase.

Dispersive forces are intermolecular attractive forces arisen from an instantaneous dipole-induced dipole attraction between molecules.

In the molecules containing hydrogen attached to a highly electronegative atom, the intermolecular electrostatic attraction forces are very strong between the hydrogen of one molecule and the electronegative atom of another, this is called hydrogen bonding.

Vapor pressure decreases and boiling point increases with increase in strength of intermolecular forces.

Interpretation Introduction

To determine:

Member having the higher boiling point for each of the given pair of compounds.

Expert Solution & Answer

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Which type of intermolecular force accounts for each ofthese differences? (a) CH3OH boils at 65 °C; CH3SH boils at6 °C. (b) Xe is a liquid at atmospheric pressure and 120 K,whereas Ar is a gas under the same conditions. (c) Kr,atomic weight 84 amu, boils at 120.9 K, whereas Cl2, molecularweight about 71 amu, boils at 238 K. (d) Acetone boilsat 56 °C, whereas 2-methylpropane boils at -12 °C.

NaH crystallizes with the same crystal structure as NaCl. The edge length of the cubic unit cell of NaH is 4.880 Å.(a) Calculate the ionic radius of H−. (The ionic radius of Li+ is 0.0.95 Å.)(b) Calculate the density of NaH.

Explain for these observations: (a) The surface tension of CHBr3 is greater than that of CHCl3. (b) As temperature increases, oil flows faster through a narrow tube. (c) Raindrops that collect on a waxed automobile hood take on a nearly spherical shape.

Answer 2

Question

Chapter 8, Problem 8.49PAE

Interpretation Introduction

Interpretation:

For each of the given pair of compounds, member having the higher boiling point should be identified.

Concept introduction:

Intermolecular forces are much weaker than the chemical bonds but they are largely responsible for the structure of any solid or condensed phase.

Dispersive forces are intermolecular attractive forces arisen from an instantaneous dipole-induced dipole attraction between molecules.

In the molecules containing hydrogen attached to a highly electronegative atom, the intermolecular electrostatic attraction forces are very strong between the hydrogen of one molecule and the electronegative atom of another, this is called hydrogen bonding.

Vapor pressure decreases and boiling point increases with increase in strength of intermolecular forces.

Interpretation Introduction

To determine:

Member having the higher boiling point for each of the given pair of compounds.

Expert Solution & Answer

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Check out sample textbook solution

Answer 3

Question

Chapter 8, Problem 8.49PAE

Interpretation Introduction

Interpretation:

For each of the given pair of compounds, member having the higher boiling point should be identified.

Concept introduction:

Intermolecular forces are much weaker than the chemical bonds but they are largely responsible for the structure of any solid or condensed phase.

Dispersive forces are intermolecular attractive forces arisen from an instantaneous dipole-induced dipole attraction between molecules.

In the molecules containing hydrogen attached to a highly electronegative atom, the intermolecular electrostatic attraction forces are very strong between the hydrogen of one molecule and the electronegative atom of another, this is called hydrogen bonding.

Vapor pressure decreases and boiling point increases with increase in strength of intermolecular forces.

Interpretation Introduction

To determine:

Member having the higher boiling point for each of the given pair of compounds.

Expert Solution & Answer

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See solution

Check out sample textbook solution

Answer 4

Question

Chapter 8, Problem 8.49PAE

Interpretation Introduction

Interpretation:

For each of the given pair of compounds, member having the higher boiling point should be identified.

Concept introduction:

Intermolecular forces are much weaker than the chemical bonds but they are largely responsible for the structure of any solid or condensed phase.

Dispersive forces are intermolecular attractive forces arisen from an instantaneous dipole-induced dipole attraction between molecules.

In the molecules containing hydrogen attached to a highly electronegative atom, the intermolecular electrostatic attraction forces are very strong between the hydrogen of one molecule and the electronegative atom of another, this is called hydrogen bonding.

Vapor pressure decreases and boiling point increases with increase in strength of intermolecular forces.

Interpretation Introduction

To determine:

Member having the higher boiling point for each of the given pair of compounds.

Expert Solution & Answer

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See solution

Check out sample textbook solution

Answer 5

Chapter 8, Problem 8.49PAE

Interpretation Introduction

Interpretation:

For each of the given pair of compounds, member having the higher boiling point should be identified.

Concept introduction:

Intermolecular forces are much weaker than the chemical bonds but they are largely responsible for the structure of any solid or condensed phase.

Dispersive forces are intermolecular attractive forces arisen from an instantaneous dipole-induced dipole attraction between molecules.

In the molecules containing hydrogen attached to a highly electronegative atom, the intermolecular electrostatic attraction forces are very strong between the hydrogen of one molecule and the electronegative atom of another, this is called hydrogen bonding.

Vapor pressure decreases and boiling point increases with increase in strength of intermolecular forces.

Interpretation Introduction

To determine:

Member having the higher boiling point for each of the given pair of compounds.

Answer 6

Chapter 8, Problem 8.49PAE

Interpretation Introduction

Interpretation:

For each of the given pair of compounds, member having the higher boiling point should be identified.

Concept introduction:

Intermolecular forces are much weaker than the chemical bonds but they are largely responsible for the structure of any solid or condensed phase.

Dispersive forces are intermolecular attractive forces arisen from an instantaneous dipole-induced dipole attraction between molecules.

In the molecules containing hydrogen attached to a highly electronegative atom, the intermolecular electrostatic attraction forces are very strong between the hydrogen of one molecule and the electronegative atom of another, this is called hydrogen bonding.

Vapor pressure decreases and boiling point increases with increase in strength of intermolecular forces.

Answer 7

Chapter 8, Problem 8.49PAE

Interpretation Introduction

Interpretation:

For each of the given pair of compounds, member having the higher boiling point should be identified.

Concept introduction:

Intermolecular forces are much weaker than the chemical bonds but they are largely responsible for the structure of any solid or condensed phase.

Dispersive forces are intermolecular attractive forces arisen from an instantaneous dipole-induced dipole attraction between molecules.

In the molecules containing hydrogen attached to a highly electronegative atom, the intermolecular electrostatic attraction forces are very strong between the hydrogen of one molecule and the electronegative atom of another, this is called hydrogen bonding.

Vapor pressure decreases and boiling point increases with increase in strength of intermolecular forces.

Answer 8

Interpretation Introduction

To determine:

Member having the higher boiling point for each of the given pair of compounds.

Answer 9

Interpretation Introduction

To determine:

Member having the higher boiling point for each of the given pair of compounds.

Answer 10

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Answer 11

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Answer 21

Ch. 8 - Prob. 1CO Ch. 8 - • describe the arrangement of atoms in the common...Ch. 8 - • use bind theory to describe bonding in solids.Ch. 8 - Prob. 4CO Ch. 8 - Prob. 5CO Ch. 8 - Prob. 6CO Ch. 8 - Prob. 7CO Ch. 8 - • explain the connection between intermolecular...Ch. 8 - Prob. 9CO Ch. 8 - Prob. 10CO

Solution Summary: The author explains that intermolecular forces are weaker than chemical bonds, but they are responsible for the structure of any solid or condensed phase.

To determine:

Member having the higher boiling point for each of the given pair of compounds.

Chapter 8 Solutions

Solution Summary: The author explains that intermolecular forces are weaker than chemical bonds, but they are responsible for the structure of any solid or condensed phase.

To determine: Member having the higher boiling point for each of the given pair of compounds.

Chapter 8 Solutions

To determine:

Member having the higher boiling point for each of the given pair of compounds.