31. 2076 Set B Q. No. 25 Define bond dissociation energy. The bond dissociation energy of H2 (g) and Cl2 (g) are 435 KJ/mol and 243 KJ/mol respectively. The enthalpy of formation of HCl (g) -92 KJ/mol. Calculate the bond dissociation energy of HCl (g). [1+4] Ans. *431 KJ/mol

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