Question

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

A) No answer text provided.
B) Decrease
C) Remain the same
D) Increase

Answer 1

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

Entropy is defined aso

`\Delta S = (\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.