The ease of dissolution of a solute depends on change in

Options

A. internal energy
B. enthalpy
C. entropy
D. both (2) and (3)

Answer

4

Explanation

The ease of dissolution of a solute depends on two factors:
(1) the change in ethaply and (2) the change in isorder (called entropy change) that accompanies the process.
A process is favored by (1) a decrese in the enthalpy of the system, which corresponds to an exothemic process, and (2) an increase in the disorder or randomness, of the system. If a solution gets hotter as a substance dissolves, engry is being released in th form of heat. The enthalpy change that accompanies a dissolution process is called the heat of solution, `DeltaH_("soln")`. It depends mainly on how strongly solute and solvent particles interact. A negative value of `DeltaH_("soln")`designates the release of heat. More negative (less positive) values of `DeltaH_("soln")` favour the dissolution process.