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)

Question

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)

matt101 · Answer

You can solve this using the following equation:

$$\Delta Hn=-mc \Delta T$$

anonymous · Answer

What would be the value of m and c

matt101 · Answer

The m is referring to the mass of the water in the calorimeter. The c is the specific heat of water.