## Chemical Energetics Enthalpy Change of Solution

Here’s an “ingelious” way to remember the relationship between Enthalpy Change of Solution to Lattice Energy and Enthalpy Change of Hydration related to chemical energetics.

Enthalpy Change of Hydration requires water, hence the (aq).

Enthalpy Change of Solution requires solid, just remember both terms start with s.

If you need to find the value of Enthalpy Change of Solution, you do not have to force it to be the subject and change the diretion of the arrows.

Follow the diagram below, compare the vector directions and make Enthalpy Change of Solution the subject in the next equation.