Introductory Chemistry (5th Edition)

Published by Pearson
ISBN 10: 032191029X
ISBN 13: 978-0-32191-029-5

Chapter 12 - Liquids, Solids, and Intermolecular Forces - Exercises - Problems: 64

Answer

a. dispersion force and dipole-dipole forces b. dispersion force, hydrogen bonds, and dipole-dipole forces c. dispersion forces d. dispersion forces

Work Step by Step

a. In $HCl$, polar bond exists in this molecule because of the difference in electronegativities of atoms in $HCl$. Hence dispersion force and dipole-dipole forces are present in $HCl$. b. In $H_{2}O$, a polar bond exists in this molecule because of the difference in electronegativities of atoms in $H_{2}O$. Hydrogen is bonded to oxygen. Hence dispersion force, hydrogen bonds, and dipole-dipole forces are present in $H_{2}O$. c. $Br_{2}$ is a nonpolar molecule. Hence only dispersion forces are present. d. $He$ is a nonpolar molecule. Hence only dispersion forces are present.
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