Chemistry Class-11: Chapter –6. Thermodynamics Part – 12
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Question: 62
Graphically show the total work done in an expansion when the state of an ideal gas is changed reversibly and isothermally . With the help of a plot compare the work done in the above case with that carried out against a constant external pressure .
Answer:
(i) Reversible Work is represented by the combined areas

Isothermal Change
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and

Reversible Work
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(ii) Work against constant pressure, is represented by the area

Constant Pressure
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Isothermal Change
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