Question

10 g of ice at 0°C is kept in a calorimeter of water equivalent 10 g at 0°C. How much heat should be supplied to the system to evaporate the water?
( Lf = 80 cal/gm, Lv = 540 cal/gm, Sw = 1 cal/gm)

Answer 1

10(80) + (10+10)(1)(100)+ 10(540)

= 800 + 2000 + 5400

= 8200J