Answer
Option-b
Negative.
Work Step by Step
For an ideal gas undergoing an isothermal process, the change in entropy (
ΞS) can be calculated using the formula:
$\Delta$π=$ππ
$ $ln(πf$/$ππ)$
where:
π is the number of moles of gas,
R is the gas constant,
πf is the final volume,
πi is the initial volume.
so
βEntropy decreases as the volume decreases.
