An ideal gas undergoes an isothermal expansion.During this process,its entropy
A)decreases.
B)remains unchanged.
C)increases.
D)cannot be predicted from the data given.

Question

Quizplus · Accepted Answer

During an isothermal expansion, the temperature remains constant. As the volume of the gas increases, the number of microstates available to the gas molecules increases, allowing for a greater number of possible arrangements of the molecules. This leads to an increase in entropy, so the correct choice is (C) increases.

An Ideal Gas Undergoes an Isothermal Expansion