Calculate the heat of formation of benzene from the following data, assuming no resonance Bondenergies :C - Chemistry - Solutions

Question

Calculate the heat of formation of benzene from the following data,
assuming no resonance Bondenergies :C – C = 83 kcal CC = 140
kcalC – H = 99 kcal Heat of atomisation of C = 170 9 kcalHeat
of atomisation of H = 52 1 kca1

Raveena Sharma · Accepted Answer

The solution is as follows:

1 Heat of formation of C6H6 = 6 (C-C) + 6
(C-H ) + 3 (C=C) + 6 (atomisation of C) + 6 (atomisation of H)

= 2256 3 kcal

Calculate the heat of formation of benzene from the following data, assuming no resonance. Bondenergies :C – C = 83 kcal CC = 140 kcalC – H = 99 kcal Heat of atomisation of C = 170 .9 kcalHeat of atomisation of H = 52.1 kca1