Calculating Enthalpy for CaCl2+H20 -> Ca+2HCl

[lilysfairy]

Homework Statement

I need to find a theoretical enthalpy for a reaction so that I can find a percent error.
the reaction is:
CaCl2+H20 =>Ca)+2HCl

Homework Equations

delta H=m*c*delta T

The Attempt at a Solution

Should I use the enthalpies of formation for each of the products?

 

[cdotter]

According to Hess's law, standard enthalpies of formation will work.

 

[sigmavirus]

yeah, Hess's law is the way to go. and have fun with thermochem. it was hell for my class last year. i hope you survive.