Answer to Question #33420 in Physical Chemistry for mel

Question

A quantity of wet steam of mass 0.15kg is trapped in a cylinder behind a leak-proof piston. The initial pressure and quality of the steam are 3 bar and 0.7 respectively. Heat is supplied to the steam at constant pressure until the volume becomes 0.1 cu.m. Calculate

a) The work done: answer 10.9 KJ
b ) the change in internal energy : answer 98.1KJ
c) heat transfer : answer 109 KJ