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  4. Work done per mol in an isothermal change is

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Q. Work done per mol in an isothermal change is

Thermodynamics

Solution:

For isothermal process $pV=RT\Rightarrow p=\frac{RT}{V}$ $=W=pdV= \int^{v_2}_{v_1} \frac{RT}{V}dV=RT \log_e\frac{V_2}{V_1}$