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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Decide which type of intermolecular force is involved in (a) liquid O2; (b) liquid CH3OH; and (c) N2 dissolved in H2O.

(a)

Interpretation Introduction

Interpretation:

The predominant molecular force present in O2 has to be determined.

Concept Introduction:

Intermolecular forces in a molecule are the important factor which is responsible for the physical changes of the molecule.

The intermolecular forces in gases are negligibly small and the forces are comparatively stronger in liquids and the intermolecular forces are highest in solids.

The stronger the intermolecular forces, closer will be the molecules in contact and thus higher will be the boiling point and melting point of the substance.

Three types of intermolecular forces:

  • London dispersion (Induced dipole-induced dipole forces)
  • Dipole-dipole
  • Hydrogen bonding
Explanation

Given the molecule: O2.

London dispersion forces(Induced dipole-induced dipole forces) are the intermolecular forces exist in all molecules regardless of structure and are due to the constant motion of electrons within molecules

(b)

Interpretation Introduction

Interpretation:

The predominant molecular force present in liquid CH3OH has to be determined.

Concept Introduction:

Intermolecular forces in a molecule are the important factor which is responsible for the physical changes of the molecule.

The intermolecular forces in gases are negligibly small and the forces are comparatively stronger in liquids and the intermolecular forces are highest in solids.

The stronger the intermolecular forces, closer will be the molecules in contact and thus higher will be the boiling point and melting point of the substance.

Three types of intermolecular forces:

  • London dispersion
  • Dipole-dipole
  • Hydrogen bonding

(c)

Interpretation Introduction

Interpretation:

The predominant molecular force present in N2dissolvedinH2O has to be determined.

Concept introduction:

Intermolecular forces in a molecule are the important factor which is responsible for the physical changes of the molecule.

The intermolecular forces in gases are negligibly small and the forces are comparatively stronger in liquids and the intermolecular forces are highest in solids.

The stronger the intermolecular forces, closer will be the molecules in contact and thus higher will be the boiling point and melting point of the substance.

Three types of intermolecular forces:

  • London dispersion
  • Dipole-dipole
  • Hydrogen bonding

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