Question

Determine the heat of hydration, in kJ/mol, for the reaction between solid Calcium chloride (CaCl2) and water (H2O), given that 1 mole of CaCl2 dissolves to produce 3 moles of ions and releases -82.8 kJ of heat in the process.

Answer 1

The heat of hydration for the reaction between solid calcium chloride  CaCl2  and water  H2O  can be determined by considering the heat released when 1 mole of CaCl2 dissolves in water.Given that 1 mole of CaCl2 dissolves to produce 3 moles of ions and releases -82.8 kJ of heat in the process, we can calculate the heat of hydration per mole of CaCl2.Since the heat released is -82.8 kJ for 1 mole of CaCl2, the heat of hydration for the reaction between solid calcium chloride and water is:Heat of hydration = -82.8 kJ/mol