For a sample of perfect gas when its pressure is changed isothermally from pi to pf, the entropy change is given by

(1) $∆$S = nRln(pf/pi)

(2) $∆$S = nRln(pi/pf)

(3) $∆$S = nRTln(pf/pi)

(4) $∆$S = RTln(pf/pi)

Subtopic:  Spontaneity & Entropy |
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
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For a sample of a perfect gas when its pressure is changed isothermally from Pi to Pf, the entropy change is given by:

1.

2.

3.

4.

Subtopic:  Spontaneity & Entropy |
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh