Question

State and explain Hess's law of constant heat summation.​

Answer 1

Explanation:

The law states that the change in enthalpy for a reaction is the same whether the reaction takes place in one or a series of steps. The Hess's law can also be stated as the enthalpy change for a chemical reaction is the same regardless of the path by which the reaction occurs.

Answer 2

Answer:

Hess law of constant heat summation states that enthalpy change for a reaction is always same no matter the way it is done . For example , salt can be made by HCl +Naoh or by reacting Na and Cl ions . in Both the case the enthalpy change is same.But make sure that Ions don't exist in nature freely so you have to first give energy to Na and Cl2 to receive ions.( that ionisation energy will be counted as well)