Given, \( \mathrm{H}_{2}(\mathrm{~g})+\mathrm{Br}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{HBr...

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Given, \( \mathrm{H}_{2}(\mathrm{~g})+\mathrm{Br}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{HBr}(\mathrm{g}), \Delta \mathrm{H}^{\circ}{ }_{1} \) and standard enthalpy of condensation of bromine is \( \Delta \mathrm{H}^{\circ} \), standard enthalpy of formation of \( \mathrm{HBr} \) at \( 25^{\circ} \mathrm{C} \) is
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