Two moles of ideal gas at 27^(@)C temper...

Two moles of ideal gas at `27^(@)C` temperature is expanded reversibly from 2 litre to 20 liter. Find entropy change `(R=2cal//molK)` .

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The correct Answer is:

9,2

`DeltaS =2.303 nR log V_(2)/V_(1) = 2.303 xx 2 xx 2 log 20/2 = 9.2 cal K^(-1) mol^(-1)`

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