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The Bond dissociation Energies of H2, Cl2, and HCl are 104, 58 and 103 Kcal respectively. The Enthalpy of formation of HCl of HCl gas will be


A

-44 Kcal

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B

-88 Kcal

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C

-22 Kcal

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D

-11 Kcal

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Solution

The correct option is C

-22 Kcal


ΔHf = B.E. of Reactants B.E. of Products


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