Meteorologists need to understand how the thermodynamic properties of air are affected by different conditions. They might

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Meteorologists need to understand how the thermodynamic properties of air are affected by different conditions. They might begin by studying nitrogen, the principal component of air. What is the change in entropy of the gas when 1.00 mol N2(g) expands isothermally from 22.0 L to 44.0 L?

ANTICIPATE Because the greater volume provides more locations into which the molecules of the gas can spread, you should expect its entropy to increase.

PLAN Use Eq. 2 to calculate the entropy change for an isothermal expansion when the initial and final volumes are known.

What should you assume? Assume that nitrogen behaves as an ideal gas.V AS = nR ln- V (2)

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Chemical Principles The Quest For Insight

ISBN: 9781464183959

7th Edition

Authors: Peter Atkins, Loretta Jones, Leroy Laverman

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