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An organic molecule has 5 C = C bonds (h...

An organic molecule has 5 C = C bonds (heat of hydrogenation for C = C bond is 28.8 kJ `mol^(-1)`) and experimental value for heat of hydrogenation is 99 kJ `mol^(-1)`. The resonance energy in kJ `mol^(-1)` is

A

45

B

90

C

70

D

140

Text Solution

Verified by Experts

The correct Answer is:
A
Theoretical `HOH = 5 xx 28.8 = 144.0 kJ //mol`
`("Exp. HO = 99 kJ /mol")/("RE = 45 kJ/mol")` (Resonance energy=(`Delta`Hydrogenation) Theoretical – Exp.)
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