A saturated water vapour is contained in a cylindrical vessel under a weightless piston at a
Channel: Doubtnut
Date: 2021-11-02

A saturated water vapour is contained in a cylindrical vessel under a weightless piston at a temperature `t = 100 ^@C`. As a result of a slow introduction of the piston a small fraction of the vapour `Delta m = 0.70 g` gets condensed. What amount of work was perfomed over the gas ? The vapour is assumed to be ideal, the volume of the liquid is to be neglected.