Final answer:
The enthalpy of solution (ΔHsoln) is the change in enthalpy that occurs when a specified amount of solute is dissolved in a given quantity of solvent. It can be either positive or negative, depending on whether the process is endothermic or exothermic.
Step-by-step explanation:
The enthalpy of solution (ΔHsoln) is the change in enthalpy that occurs when a specified amount of solute is dissolved in a given quantity of solvent. It represents the heat absorbed or released during the dissolution process. The enthalpy of solution can be either positive or negative, depending on whether the process is endothermic or exothermic.
For example, when sodium hydroxide (NaOH) dissolves in water, it releases heat, so the enthalpy of solution is negative. On the other hand, when potassium hydroxide (KOH) dissolves in water, it absorbs heat, resulting in a positive enthalpy of solution.