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Answer:
Hess's law is used as :
(1) To calculate the heat of formation, combustion, neutralisation, ionization, etc.
(2) To calculate enthalpies of reactants and products.
(3) To determine the bond enthalpies.
hope it helped
Hess's law is a chemical law that states that the total enthalpy change for a chemical process is the same whether the process takes place in a single step or in a series of steps. This law is based on the principle of conservation of energy, which states that energy can neither be created nor destroyed.
The application of Hess's Law:
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