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Chapter 1: Q. 1.25 (page 17)

List all the degrees of freedom, or as many as you can, for a molecule of water vapor. (Think carefully about the various ways in which the molecule can vibrate.)

Short Answer

Expert verified

Total degree of freedom for water vapor is 3.

Step by step solution

01

Given information

water vapor molecule is given.

02

Explanation

The H-O bonds enclose 105 degrees, so the molecule is definitely nonlinear.
The rotational modes are around three axes, two of them in the molecular plane and one perpendicular to it.
We can see these rotational axis in the figure as below

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