The net enthalpychange of a reaction is the amount of energyrequire...

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The net enthalpychange of a reaction is the amount of energyrequired to break all the bonds in reactant molecules minus amount of energyrequired to form all the bonds in the product molecules. What will be
\( \mathrm{P} \) the enthalpychange for the following reaction.

W
\[
\mathrm{H}_{2}(\mathrm{~g})+\mathrm{Br}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{HBr}(\mathrm{g})
\]
Given that Bond energyof \( \mathrm{H}_{2}, \mathrm{Br}_{2} \) and \( \mathrm{HBr} \) is \( 435 \mathrm{~kJ} \mathrm{~mol}^{-1}, 192 \mathrm{~kJ} \mathrm{~mol}^{-1} \) and \( 368 \mathrm{~kJ} \mathrm{~mol}^{-1} \) respectively.
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