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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 12, Problem 32E
Textbook Problem
132 views

Which liquid would you expect to be least volatile?

a. pentane

b. hexane

c. octane

d. decane

Interpretation Introduction

Interpretation:

The least volatile substance is to be determined.

Concept Introduction:

The boiling point of a substance depends upon the intermolecular forces and thermal energy.

Intermolecular forces keep the molecules together. Greater the intermolecular force, higher will be the boiling point.

Dispersion forces are possessed by all atoms and molecules and depend upon the molar mass.

Explanation of Solution

Reason for correct option:

The volatility of a molecule depends upon its boiling point. Greater the boiling point, the less volatile the moleculeis. The boiling point of a substance depends upon the intermolecular forces and thermal energy. The intermolecular forces depend upon dispersion forces and dipole forces. The molecules pentane, hexane, octane and decane are all hydrocarbons with no functional groups, and possess dispersion forces which depend upon their molar masses. Higher the molar mass, higher is the magnitude of dispersion forces, and hence higher is the boiling point...

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Chapter 12 Solutions

Chemistry In Focus
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