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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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