When 10.00 mL of 1.00 M HCl solution is mixed with 115 mL of 0.100 M NaOH solution in a constant-pressure calorimeter, the temperature rises from 22.45 °C to 23.25 °C. Calculate q for this reaction, assuming that the heat capacity of the calorimeter is the same as that of 125 g of water.

Answer 1

heat=2*125*Cw*(23.25-22.45)

Now that is the heat for .010*1mole of each reactant, or .020*1mole of NaCl (check this on balanced reaction).

so if you want to get heat per mole of NaCl, then divide heat above by .020