Q.

An organic molecule has 5C = C bonds (heat of hydrogenation for one C = C bond is 28.8k J / mol) and the experimental value for heat of hydrogenation is 99 k J /mol of compound. The magnitude of resonance energy in k J /mol of compound is

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answer is 45.

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Detailed Solution

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Resonance energy (5×28.8)99=45Kj/mol: Expected enthalpy – actual enthalpy

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