Question

In an experiment. 17 g of ice is used to bring down the temp. of 40 g of water from 34°C to its freezing point. The sp. heat capacity of water is 4.25 J/g°C. Calculate sp. latent heat of ice.

Answer 1

Heat gained by ice at 0°C to convert to water at 0°C = Heat lost by water from 34°C to 0°C 

17 x L = 40 x 4.25 x 34

17 L = 5780

L = 340 J/g