How much heat is produced when 100 mL of 0.250 M HCI (density, 1.00 g/mL) and 200 mL of 0.150 M NaOH (density, 1.00 g/mL) are mixed? HCI (aq) + NaOH (aq) rightarrow NaCl (aq) + H_2 O(l) Delta H degree_298 = - 58 kJ If both solutions are at the same temperature and the heat capacity of the products is 4.19 J/g degree C, how much will the temperature increase? What assumption did you make in your calculation?