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    At standard conditions, if the change in the enthalpy for the following reaction is -109kJ mol⁻¹. Given that bond energy of H₂ and Br₂ is 435k
    Question

    At standard conditions, if the change in the enthalpy for the following reaction is -109kJ mol⁻¹.

    Given that bond energy of H₂ and Br₂ is 435kJ mol⁻¹ and 192kJ mol⁻¹, respectively, what is the bond energy (in kJ mol⁻¹ of HBr ?

    A.

    259

    B.

    368

    C.

    736

    D.

    518

    Correct option is B

    Ans.(b)

    ;

    = sum of bond energy of reactants – sum of bond energy of products

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