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Use the following data to answere the qu...

Use the following data to answere the question below.

Calculate the resonance energy of anthracene:

A

84 kcal/mol

B

100 kcal/mol

C

110 kcal/mol

D

116 kcal/mol

Text Solution

Verified by Experts

The correct Answer is:
A
Resonance energy =Theoretical heat of hydrogenation -Experimental heat of hydrogenation.

So theoretical heat of hydrogenation (H.O.H) for anthracne is

Theoretical `DeltaH=7xx(-28.6)=-202.2` kcal/mol
Experimental `DeltaH=-116.2` kcal/mol
Resonance energy =84 kcal/mol
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