Question

What is the difference in the process of dissolution and a chemical reaction?

Answer 1

“Dissolution” is merely the solution of a substance with water. In Dissolution the slight overall electric polarity of the H2O molecule is enough to pull apart (i.e. “dissolve”) the ions of the solute. 

Hydrolysis is a true chemical reaction with water. Different products come out of hydrolysis than were put in.

Answer 2

Hydrolysis is the chemical breakdown of a compound due to reaction with water. Dissolution is a process by which the original states of matter turn into a liquid or other solvent and become solutes - dissolvedcomponents. The easiest way of explaining these processes is to take a look at chemical weathering.