Chemistry · 2009
NEET 2009 · Prelims · Code A · Q55
From the following bond energies: H - H bond energy: 431.37 kJ mol^-1 C = C bond energy: 606.10 kJ mol^-1 C - C bond energy: 336.49 kJ mol^-1 C - H…
From the following bond energies :
$\displaystyle \mathrm{H}-\mathrm{H}$ bond energy : $\displaystyle 431.37 \mathrm{~kJ} \mathrm{~mol}^{-1}$
$\displaystyle \mathrm{C}=\mathrm{C}$ bond energy : $\displaystyle 606.10 \mathrm{~kJ} \mathrm{~mol}^{-1}$
$\displaystyle \mathrm{C}-\mathrm{C}$ bond energy : $\displaystyle 336.49 \mathrm{~kJ} \mathrm{~mol}^{-1}$
$\displaystyle \mathrm{C}-\mathrm{H}$ bond energy : $\displaystyle 410.50 \mathrm{~kJ} \mathrm{~mol}^{-1}$
Enthalpy for the reaction,
will be :
will be :Official answer
(4)
$\displaystyle -120.0 \mathrm{~kJ} \mathrm{~mol}^{-1}$
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NEET (UG) 2009 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.