Answered: How many of the following three choices…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

How many of the following three choices have dipole-dipole forces as their strongest intermolecular force?

Cl ₂
PH _3
CF2Cl2

Expert Solution

Explanation of the answer given.

Dipole-dipole forces are the strongest intermolecular forces in two of the three choices given: PH3 and CF2Cl2.

PH3 is a polar molecule due to its bent shape and the difference in electronegativity between phosphorus and hydrogen atoms. As a result, it has a permanent dipole moment, which results in dipole-dipole interactions between molecules.

CF2Cl2 is also a polar molecule due to the difference in electronegativity between carbon, fluorine, and chlorine atoms. This results in a permanent dipole moment and dipole-dipole interactions between molecules.

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