If a solute dissolves in an endothermic process
A) hydrogen bonds must exist between solvent and solute.
B) strong ion-dipole forces must exist in the solution.
C) the solute must be a gas.
D) the entropy of the solution is immaterial.
E) the entropy of the solution must be greater than that of its pure components.

Question

Quizplus · Accepted Answer

In an endothermic dissolution process, the system absorbs heat from the surroundings. For the process to be spontaneous, the increase in entropy (disorder) of the system must compensate for the absorbed heat, meaning the entropy of the solution must be greater than that of its pure components. This aligns with the second law of thermodynamics, which states that for a process to be spontaneous, the total entropy of the system and its surroundings must increase.

If a Solute Dissolves in an Endothermic Process