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)