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

`Delta S = nRIn(p_(f)/p_(i))`

`Delta S = nRIn(p_(i)/p_(f))`

`Delta S = nRTIn(p_(f)/p_(i))`

`Delta S = nRTIn(p_(i)/p_(f))`

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