Question

Which enthalpy change (î"h) is correct for a substance changing from the liquid phase to the solid phase?

Answer 1

I believe this should be the enthalpy of fusion. Enthalpy change is the amount of heat evolved or absorbed in a reaction. Enthalpy of fusion also called the heat of fusion resulting from providing heat energy or release of energy to a specific amount of a substance to change from solid state to liquid, without change in temperature.