Heat Of Solution
What is Heat Of Solution?
The heat of solution (enthalpy of solution, ΔH_soln) is the total heat absorbed or released when a solute dissolves completely in a solvent to form a solution at constant pressure. It results from the interplay of three energy processes: breaking solute-solute interactions (endothermic), breaking solvent-solvent interactions (endothermic), and forming new solute-solvent interactions (exothermic). Depending on the relative magnitudes of these interactions, the heat of solution can be positive (endothermic dissolution) or negative (exothermic dissolution).
Key Facts
Frequently Asked Questions
The heat of solution (enthalpy of solution, ΔH_soln) is the total heat absorbed or released when a solute dissolves completely in a solvent to form a solution at constant pressure. It results from the interplay of three energy processes: breaking solute-solute interactions (endothermic), breaking solvent-solvent interactions (endothermic), and forming new solute-solvent interactions (exothermic). Depending on the relative magnitudes of these interactions, the heat of solution can be positive (endothermic dissolution) or negative (exothermic dissolution).