9.4 Hess' Law and Enthalpy Cycles

Question 1

State hess’ law

Answer 1

If a reaction can take place by two routes, and the starting and finishing routes are the same, the total enthalpy change is the same for each route.

Question 2

How do I revise this?

Answer 2

Idk man it’s hard to explain, just look at the diagrams and do practice questions and shit