Chemistry - Thermochemistry Question with Solution | TestHub

At standard conditions, if the change in the enthalpy for the following reaction is $-109 {\mathrm{kJmol}}^{-1}$

${\mathrm{H}}_{2\left(\mathrm{g}\right)}+{\mathrm{Br}}_{2\left(\mathrm{g}\right)}\to 2{\mathrm{HBr}}_{\left(\mathrm{g}\right)}$

Given that bond energy of ${\mathrm{H}}_2$ and ${\mathrm{Br}}_2$ is $435 {\mathrm{kJmol}}^{-1}$ and $192 {\mathrm{kJmol}}^{-1}$, respectively, what is the bond energy (in $\mathrm{kJ} {\mathrm{mol}}^{-1}$) of $\mathrm{HBr}?$

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