Which technique can the enthalpy change for a reaction be determined experimentally?

Calorimetry is a technique used to measure the heat exchanged in a chemical reaction or a physical process. The enthalpy change (ΔH) for a reaction can be determined experimentally through calorimetry. In a typical calorimetric experiment, the reaction is carried out in a calorimeter, a device designed to isolate the system (the reaction) from its surroundings. The calorimeter is surrounded by a known quantity of water or another suitable solvent, and any heat released or absorbed by the reaction is transferred to the surrounding water.