wiz-icon
MyQuestionIcon
MyQuestionIcon
16
You visited us 16 times! Enjoying our articles? Unlock Full Access!
Question

From the following thermochemical equations:
C2H4C2H6;H=32.7kcal
C6H6+3H2C6H12;H=49.2kcal
Calculate resonance energy of benzene.

A
48.9 kcal
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
49.2 kcal
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
16.5 kcal
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
98.1 kcal
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 48.9 kcal
Enthalpy of hydrogenation of C=C bond =32.7 kcal
Calculated enthalpy of hydrogenation of benzene =32.7×3=98.1 kcal
Actual enthalpy of hydrogenation of benzene=45.2 kcal
Hence, Resonance energy of benzene=98.1(45.2)=52.9 kcal

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Enthalpy
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon