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The bond dissociation energy of gaseous H2 , Cl2 and HCl are 104, 58 and 103 kcal mol^–1 respectively. The enthalpy of formation for HCl gas will be

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The bond dissociation energy of gaseous H2 , Cl2 and HCl are 104, 58 and 103 kcal mol–1 respectively. The enthalpy of formation for HCl gas will be

(A)  – 44.0 kcal

(B)  – 22.0 kcal

(C)  22.0 kcal

(D)  44.0 kcal

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Correct option (B) – 22.0 kcal

Explanation:

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