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Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

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Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 11, Problem 17PS
Textbook Problem
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Which member of each of the following pairs of compounds has the higher boiling point?

  1. (a) O2 or N2
  2. (b) SO2 or CO2
  3. (c) HF or HI
  4. (d) SiH4 or GeH4

(a)

Interpretation Introduction

Interpretation: The compound having higher boiling point has to be determined.

Concept Introduction:

The attractive force that withholds two molecules is called as intermolecular force. The influence of intermolecular forces depends on molar mass and the functional group present in the molecule.

Types and strength of intermolecular forces in decreasing order:

Ionic>Hydrogen bonding>Dipole-Dipole Interactions>Induced Dipole–Induced Dipole Forces

Ionic Interactions: The attractive force that holds two ionic compounds together with the help of ion-ion interactions is called as ionic interaction force

The positive charge end of one molecule is attracted to the negative charge of a neighboring molecule.

A hydrogen bonding is partially an electrostatic attraction between H atom which is bonded to more electronegative atom such as N, O, orF and another adjacent atom bearing a lone pair of electron

Dipole-Dipole Interactions: The attractive force that holds two polar molecules with help of dipole moment present in them is called as Dipole–Dipole Interactions.

The partial positive charge end of one molecule is attracted to the partial negative charge of a neighboring molecule.

Induced Dipole–Induced Dipole Forces: The attractive force that holds two nonpolar molecules with help of temporary dipole moment present in them is called as induced dipole-induced dipole forces.

If intermolecular force is small the vapor pressure of the substance is high and the boiling point will be low.

Boiling point: It is the temperature at which liquid converts to vapor. At boiling point the vapor pressure of liquid and the pressure of the surroundings are equal.

Explanation of Solution

The only intermolecular force present is in O2 and N2 induced dipole–induced dipole forces. Comparing to N2, the intermolecular forces between O2 molecules are slightly stronger

(b)

Interpretation Introduction

Interpretation: The compound having higher boiling point has to be determined.

Concept Introduction:

The attractive force that withholds two molecules is called as intermolecular force. The influence of intermolecular forces depends on molar mass and the functional group present in the molecule.

Types and strength of intermolecular forces in decreasing order:

Ionic>Hydrogen bonding>Dipole-Dipole Interactions>Induced Dipole–Induced Dipole Forces

Ionic Interactions: The attractive force that holds two ionic compounds together with the help of ion-ion interactions is called as ionic interaction force

The positive charge end of one molecule is attracted to the negative charge of a neighboring molecule.

A hydrogen bonding is partially an electrostatic attraction between H atom which is bonded to more electronegative atom such as N, O, orF and another adjacent atom bearing a lone pair of electron

Dipole-Dipole Interactions: The attractive force that holds two polar molecules with help of dipole moment present in them is called as Dipole–Dipole Interactions.

The partial positive charge end of one molecule is attracted to the partial negative charge of a neighboring molecule.

Induced Dipole–Induced Dipole Forces: The attractive force that holds two nonpolar molecules with help of temporary dipole moment present in them is called as induced dipole-induced dipole forces.

If intermolecular force is small the vapor pressure of the substance is high and the boiling point will be low.

Boiling point: It is the temperature at which liquid converts to vapor. At boiling point the vapor pressure of liquid and the pressure of the surroundings are equal.

(c)

Interpretation Introduction

Interpretation: The compound having higher boiling point has to be determined.

Concept Introduction:

The attractive force that withholds two molecules is called as intermolecular force. The influence of intermolecular forces depends on molar mass and the functional group present in the molecule.

Types and strength of intermolecular forces in decreasing order:

Ionic>Hydrogen bonding>Dipole-Dipole Interactions>Induced Dipole–Induced Dipole Forces

Ionic Interactions: The attractive force that holds two ionic compounds together with the help of ion-ion interactions is called as ionic interaction force

The positive charge end of one molecule is attracted to the negative charge of a neighboring molecule.

A hydrogen bonding is partially an electrostatic attraction between H atom which is bonded to more electronegative atom such as N, O, orF and another adjacent atom bearing a lone pair of electron

Dipole-Dipole Interactions: The attractive force that holds two polar molecules with help of dipole moment present in them is called as Dipole–Dipole Interactions.

The partial positive charge end of one molecule is attracted to the partial negative charge of a neighboring molecule.

Induced Dipole–Induced Dipole Forces: The attractive force that holds two nonpolar molecules with help of temporary dipole moment present in them is called as induced dipole-induced dipole forces.

If intermolecular force is small the vapor pressure of the substance is high and the boiling point will be low.

Boiling point: It is the temperature at which liquid converts to vapor. At boiling point the vapor pressure of liquid and the pressure of the surroundings are equal.

(d)

Interpretation Introduction

Interpretation: The compound having higher boiling point has to be determined.

Concept Introduction:

The attractive force that withholds two molecules is called as intermolecular force. The influence of intermolecular forces depends on molar mass and the functional group present in the molecule.

Types and strength of intermolecular forces in decreasing order:

Ionic>Hydrogen bonding>Dipole-Dipole Interactions>Induced Dipole–Induced Dipole Forces

Ionic Interactions: The attractive force that holds two ionic compounds together with the help of ion-ion interactions is called as ionic interaction force

The positive charge end of one molecule is attracted to the negative charge of a neighboring molecule.

A hydrogen bonding is partially an electrostatic attraction between H atom which is bonded to more electronegative atom such as N, O, orF and another adjacent atom bearing a lone pair of electron

Dipole-Dipole Interactions: The attractive force that holds two polar molecules with help of dipole moment present in them is called as Dipole–Dipole Interactions.

The partial positive charge end of one molecule is attracted to the partial negative charge of a neighboring molecule.

Induced Dipole–Induced Dipole Forces: The attractive force that holds two nonpolar molecules with help of temporary dipole moment present in them is called as induced dipole-induced dipole forces.

If intermolecular force is small the vapor pressure of the substance is high and the boiling point will be low.

Boiling point: It is the temperature at which liquid converts to vapor. At boiling point the vapor pressure of liquid and the pressure of the surroundings are equal.

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Chapter 11 Solutions

Chemistry & Chemical Reactivity
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