1.

What is the work done by saturated water which evaporates to 20 kPa atmosphere to form 1.5 m^3 of water vapor?(a) 20 kJ(b) -20 kJ(c) 30 kJ(d) -30 kJ

Answer» Right option is (d) -30 kJ

Easy explanation: Work done = -p∆V = -20*1.5 = -30 kJ.


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