Question

Question 2 An ideal gas in a piston/cylinder device is compressed at constant temperature. The entropy of the ideal gas will:

Answer 1

To solve the problem it is necessary to refer to the definition of entropy.

Entropy is defined aso

$\Delta S = \frac{\Delta Q}{T}$

Where,

$\Delta Q =$ Heat exchange

T = Temperature

Since the heat exchange is conserved and it is an isothermal process where the temperature remains constant the change in entropy remains the same, ie $\Delta S = 0$ (Reamins same)

Therefore the correct answer is C.