Heat Of Solution — Definition, Formula, Properties & Uses | AllChemicals | AllChemicals

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

Term Heat Of Solution

Index All "H" terms

Frequently Asked Questions

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).

More "H" Terms

Haber Process N₂ + 3H₂ ⇌ 2NH₃ | ΔH = −92 kJ/mol Hafnium Hf Half Cell Half Life Half-Cell E = E° − (RT/nF)lnQ Half-Life A(t) = A₀e^(−λt); t½ = ln2/λ Half-Reaction Halide X⁻ (e.g., F⁻, Cl⁻, Br⁻, I⁻) Halogen F₂, Cl₂, Br₂, I₂, At; Group 17; ns²np⁵ valence configuration Halogenation C-X + Cl₂/Br₂ (hv or AlCl₃) → C-X(halogen); EAS or radical pathway Halogens Hard Acid Hard acid: small, highly charged, low polarisability (e.g., H⁺, Mg²⁺, Al³⁺)

View all "H" terms →