CHM111L - Experiment 6: 11/9/09 - 11/13/09

Heats of Acid/Base Reactions & Hess's Law

Instructions: Input your reaction name ("Dissolve NaOH"; "HCl+NaOH(s)"; or "HCl+NaOH(aq)"), the heat capacity of your calorimeter in J/K, and the average temperature change and average calculated enthalpy change for your reaction in kJ/mole. Each member of the group should enter the group's data.

Include any comments others should be aware of (usually none).

Your write-up should include a table of the classes' enthalpy changes for the various reactions. Use them to support or refute Hess's Law. (Though be sure to consider possible mistakes that may have been made before being too harsh on Hess.)