To calculate the heat of crystallization, we need to consider two steps: 1. Cooling the water from its initial temperature 0C to the freezing point 0C .2. Freezing the water at 0C to form ice.Step 1: Cooling the water to 0CSince the water is already at 0C, there is no heat exchange in this step.Step 2: Freezing the water at 0C to form iceFirst, we need to determine the number of moles of water. The molar mass of water is 18.015 g/mol.moles of water = 50 g / 18.015 g/mol = 2.776 molesNow, we can calculate the heat of fusion Q_fusion using the heat of fusion of water 6.01 kJ/mol .Q_fusion = 2.776 moles * 6.01 kJ/mol = 16.682 kJTherefore, the heat of crystallization when 50 grams of water is frozen to form ice at a temperature of -10C is 16.682 kJ.