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JEE Main Chemistry question

ChemistryOrganic Chemistry - Some Basic Principles and TechniquesJEE Main

of cyclohexane() and benzene() at 25°C are and respectively. of cyclohexene() at 25°C is (per C=C bond). The resonance energy of benzene is found to be . Find the value of .

Answer: 4

Solution

If benzene were a hypothetical "cyclohexatriene" with 3 isolated, non-resonating double bonds, hydrogenating it fully to cyclohexane would release . The actual enthalpy difference between benzene and cyclohexane is $Δ H =

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Question ID VK-134991