Dissolution is the process where one chemical substance forms a solution with another: molecules of the two substances exist mingled in a single continuous phase. The majority component is called the solvent and the minority component is called the solute. Prior to dissolution, the solvent and the solute are often different phases (i.e. carbon dioxide gas or solid salt dissolving in the solvent water). There are various applications of dissolution associated with CDR.

{aspects for discussion: partial pressure and fugacity, solubility, Henry’s Law, diffusion and other mass-transport phenomena, boundary layers and turbulence}