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The entropies of \( \mathrm{H}_{2}(\mathrm{~g}) \) and \( \mathrm{H}(\mathrm{g}) \) are 130.6 and
P \( 114.6 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1} \) respectively at \( 298 \mathrm{~K} \). Using the

W data given below calculate the bond energy of \( \mathrm{H}_{2} \) (in \( \mathrm{kJ} / \mathrm{mol} \) ): \( \mathrm{H}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{H}(\mathrm{g}) ; \Delta \mathrm{G}^{o}=406.6 \mathrm{~kJ} \)
(1) 377.2
(2) 436.0
(3) 425.5
(4) 430.5
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