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Introduction

Work done dur...

Question

Work done during isothermal irreversible process.
(i) from $A$ to $D$ .
(ii) In complete cyclic process.

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Solution

(a) Work done in an isothermal process is

$W = n R T ln \frac{V_{f}}{V_{i}}$

So, work done from A to D is

$W = n R T ln \frac{V_{2}}{V_{1}}$

(b) area under PV curve gives work done. So, here area under PV curve is a rectangle so, will find the area of rectangle.

$W = (V_{2} - V_{1}) (P_{2} - P_{1})$

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