A) \[\approx 20\]
B) \[\approx 40\]
C) \[\approx 60\]
D) \[\approx 80\]
Correct Answer: B
Solution :
The energy difference between the observed and calculated value of heat of hydrogenation is 36 kcal/mol. This energy is called resonance energy. Hence, resonance energy of benzene in kcal/mol is about 40.
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