- Hneutralization=55.84kJ/mol Unknown number 3 Mass of dry calorimeter, (g) Initial burette reading, (mL) Final burette reading, (mL) Initial temperature of HCl,(C) 22.64 Initial temperature of NaOH,(C) Mass of calorimeter and NaCl solution, ( g ) Extrapolated temperature, Tf,(C) - The specific heat capacity of the solution is 3.74J/gC