Given the balanced equation representing a reaction: #2NaCl -> 2Na + Cl_2#. What must happen to energy in the reaction to break the bonds in NaCl?
Well, a great deal of energy must be expended to break the strong ionic bond........
Certainly we could measure the enthalpy change for the following reaction:
This goes back to the old principle we learn when we begin chemistry:
Are these ideas consistent with the principle of conservation of energy?