* Endothermic Processes: When a solution becomes cooler, it means the process is absorbing heat from the surroundings. This is characteristic of an endothermic process.
* Positive ΔH: In thermodynamics, a positive enthalpy change (ΔH) indicates an endothermic reaction. The system gains energy from the surroundings, which is why the solution cools down.
In summary: The cooling of the solution indicates an endothermic process, which is associated with a positive enthalpy change of solution (ΔHsoln).
