Question

How do you compute Hess's law calculations?

Answer 1

Hess's law states that the total enthalpy change does not rely on the path taken from beginning to end.

So, you can calculate the enthalpy as the sum of several small steps.

There are a few rules that you must follow when manipulating an equation.

You can reverse the equation. This will change the sign of

Δ

H

.

You can multiply the equation by a constant. You must then multiply the value of

Δ

H

by the same constant.

You can use any combination of the first two rules.