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If a gas at a pressure of 10 atm at 300 ...

If a gas at a pressure of `10 atm` at `300 K` expands against a constant external pressure of `2 atm` from a vol. `10` litres to `20` litres find work done ? [Isothermal process]

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Process is irreversible
`w= (-)underset(10)overset(20)int2dv= -2[20-10]=20 L. atm`
`1` litre at `=101.3 J`
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