The molar mass of water is 18 g mol-1. The heat capacity Cp = 4200 J kg1 K1, andthe molar heats of fusion and vaporisation are 6 and 41 kJ

mol-1 respectively. Calculate the total change in entropy when: 100 g of ice melts at 0 °C The 100 g of water is then heated to 100 °C The 100 g of water is vaporised Which stage of this process requires the largest entropy change and why?