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

Question

Quizplus · Accepted Answer

During an isothermal expansion, an ideal gas absorbs heat from its surroundings to do work on the environment. Since the system absorbs heat, its entropy increases according to the second law of thermodynamics.

An Ideal Gas Undergoes an Isothermal Expansion