12. Two 100 cm3 aqueous solutions, one containing 0.010 mol NaOH and the other 0.010 mol HCl, are at the same temperature. When the two solutions are mixed the temperature rises by y °C. Assume the density of the final solution is 1.00 g cm−3. Specific heat capacity of water = 4.18 J g−1 K−1 What is the enthalpy change of neutralization in kJ mol−1? (A) (B) (C) (D)