Enthalpy of fusion (ΔfusH) :
The enthalpy change that accompanies the fusion of one mole of a solid into a liquid at constant temperature and pressure is called enthalpy of fusion.
For example,
This equation describes that when one mole of ice melts (fuses) at 0°C (273 K) and 1 atmosphere, 6.1 kJ of heat will be absorbed.
