Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 2 - Chemical Compounds - Exercise 2.12 - Alkane Boiling Points: c


London Dispersion Forces

Work Step by Step

As you will learn later, boiling point increases with an increase in intermolecular forces. Since there is no hydrogen bonding between hydrocarbons, we see that the London Dispersion Force is the main factor that contributes to the boiling point. As molecules get larger, they are able to polarize more, leading to greater intermolecular attractions. Because of these stronger attractions, more energy is needed to break them. This leads to a higher boiling point.
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