Comprehension V Use the data (all values are in \( \mathbf{k J} \) per mole at \( 25^{\circ} \ma...

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Comprehension V
Use the data (all values are in \( \mathbf{k J} \) per mole at \( 25^{\circ} \mathrm{C} \) ) given below to answer the following.
Enthalpy of formation of \( \mathrm{CH}_{3} \mathrm{CN}=+88.0 \)
Enthalpy of formation of \( \mathrm{C}_{3} \mathrm{H}_{8}=-85.0 \)
Enthalpy of sublimation of graphite \( =719.0 \)
Enthalpy of dissociation of nitrogen \( =948.0 \)
Enthalpy of dissociation of hydrogen \( =435.0 \)
Bond enthalpies: \( \mathrm{C}-\mathrm{H}=414.0 ; \mathrm{C}-\mathrm{N}=378.0 ; \mathrm{N}-\mathrm{H}=426.0 \)
The bond enthalpy of \( \mathrm{C}-\mathrm{C} \) bond \( (\mathrm{kJ} / \mathrm{mol}) \) is
(a) \( 250.0 \)
(b) \( 335.0 \)
(c) \( 223.33 \)
(d) \( 248.5 \)
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