Given that bond energies of \( \mathrm{H}-\mathrm{H} \) and \( \mathrm{Cl}-\mathrm{Cl} \) are 43....

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Given that bond energies of \( \mathrm{H}-\mathrm{H} \) and \( \mathrm{Cl}-\mathrm{Cl} \) are 430 \( \mathrm{kJ} \mathrm{mol}^{-1} \) and \( 240 \mathrm{~kJ} \mathrm{~mol}^{-1} \) respectively and \( \Delta \mathrm{H}_{\mathrm{f}} \) for
P
\( \mathrm{HCl} \) is \( -90 \mathrm{~kJ} \mathrm{~mol}^{-1} \). Bond enthalpy of \( \mathrm{HCl} \) is
W
(1) \( 290 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
(2) \( 380 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
(3) \( 425 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
(4) \( 245 \mathrm{~kJ} \mathrm{~mol}^{-1} \)


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