Question

calculate the heat of formation of benzene with the following data:- (1) c+o2=co2 ∆H=97kcal.​

Answer 1

Answer:

answer is −26.3  Kcal

Explanation:

(i) C+O    →CO₂  ,ΔH=−94  Kcal

CO₂+   1/2  O₂  →CO₂ ,ΔH=−67.7  Kcal

(ii) CO₂→CO+  1/2O₂  ,ΔH=67.7  Kcal

Adding (i) and (ii), we get

C+  1 /2 O₂→CO

=−94+67.7  Kcal

ΔH=−26.3  Kcal