Suppose 33mL of 1.20 M HCl is added to 42ML of a solution containing excess sodium hydroxide in a coffee-cup calorimeter. The solution temperature, originally at 25.0 degrees C, rises to 31.8 degrees C.
a) provide a thermochemical equation, including delta H (watch sign)
b) What is the energy (delta H) evolved in kJ per mole of HCl?
For simplicity, assume the heat capacity and the density of the final solution are those of H2O. (Note: in more accurate work, these values are not the same and must be calculated). Also assume that the total volume of the solution equals the sum of the volumes of HCl(aq) and NaOH(aq).