A 5 g piece of ice at −20∘C is put into 10 g of water at 30∘C. Assuming that heat is exchanged only between the ice and the water. Then find the heat required for phase change. Specific heat capacity of ice =2100 Jkg−1∘C−1. Specific heat capacity of water =4200 Jkg−1∘C−1 and latent heat of fusion of ice 3.36×105 J kg−1.

A 5 g piece of ice at −20∘C is put into 10 g of water at 30∘C. A

1.	A 5 g piece of ice at −20∘C is put into 10 g of water at 30∘C. Assuming that heat is exchanged only between the ice and the water. Then find the heat required for phase change. Specific heat capacity of ice =2100 Jkg−1∘C−1. Specific heat capacity of water =4200 Jkg−1∘C−1 and latent heat of fusion of ice 3.36×105 J kg−1.
Answer» A 5 g piece of ice at $- 20^{\circ}$ C is put into 10 g of water at $30^{\circ}$ C. Assuming that heat is exchanged only between the ice and the water. Then find the heat required for phase change. Specific heat capacity of ice $= 2100 J k g^{- 1}^{\circ} C^{- 1}$ . Specific heat capacity of water $= 4200 J k g^{- 1}^{\circ} C^{- 1}$ and latent heat of fusion of ice $3.36 \times 10^{5} J k g^{- 1}$ .