chemistry question

Question

50.0 mL of 1.0 M HCl (at 22.0oC) and 50.0 mL of 1.0 M NaOH (at 22.0oC) are mixed. The solution temperature rises to 28.9oC. How much heat was released by the reaction? (d=1.00 g/mL)

Answer 1

Assuming 50 ml HCl and 50 ml NaOH have densities of 1 g/ml, the total mass = 100g (ignoring the masses of the solutes).

q = mCΔT

q = 100 g * 4.184 J/g/deg * 6.9 deg

q = 2887 J