Explain the experiment to determine the enthalpy change of a chemical reaction.

Explanation

Enthalpy (H): "Enthalpy is the amount of heat exchanged by a system with its surroundings at constant pressure and temperature
Mathematically, change in enthalpy `triangleH =triangleE. P triangleV`
Enthalpy is state function. Thus, the magnitude of enthalpy change depends only upon the enthalpies in the initial and final states.
`triangleH = [H_("products")- H_("reactants")]`
Heat change at constant pressure can be measured in a calodimeter at constant pressure `triangleH=q_p`
For Exothermic reaction `triangleH= -ve`
For Endothermic reaction `triangleH= +ve`