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For a sample of perfect gas when its pre...

For a sample of perfect gas when its pressure is changed isothermally from `p_(i)` to `p_(f)` , the entropy change is given by

A

`DeltaS=nRln((p_(f))/(p_(i)))`

B

`DeltaS=nRln((p_(i))/(p_(f)))`

C

`DeltaS=nRT" "ln((p_(f))/(p_(i)))`

D

`DeltaS=RT" "ln((p_(i))/(p_(f)))`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaS=nR" ln"(P_(i))/(P_(f))`
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