Rona M.

# calculate delta H for the reaction

When 1.045 g of CaO is added to 50 mL of water at 25 degrees Celsius in a caloriemeter, the temp of the water increases to 32.3 degrees Celsius. Assuming the specific heat of the solution is 4.18 J/K*C and that the calorimeter itself absorbs a negligible amount of heat, calculate delta H (enthalpy in kilojoules) for the reaction

CaO(s) + H20(l) ---> Ca(OH)2(aq)