When 22.3 g of calcium chloride, CaCl2, was dissolved in water in a constant-pressure calorimeter, the temperature rose from 25.0°C to 37.9°C. If the heat capacity of the solution and the calorimeter is 1258 J/°C, what is the enthalpy change when 1.05 mol of calcium chloride dissolves in water? The solution process is the following.
CaCl2(s) → Ca2+(aq) + 2 Cl −(aq)