Enthalpy is a fundamental process of thermodynamics, representing a system's heat content. The enthalpy change of a reaction proposes that the heat absorbed or evolved at a constant pressure during a chemical reaction, and it is equivalent to the amount of energy shared or gained during the reaction. Generally, it is denoted by ΔH.
In this animation, we provide a demonstration of an enthalpy change for the interaction between acetone and chloroform and give out a clear outline of the whole process.