The standard molar heat of formation of ethane, CO2 and water (l) are

1.	The standard molar heat of formation of ethane, CO2 and water (l) are −21.2,−94.1 and −68.3 kcal respectively. The standard molar heat of combustion of ethane will be ?_______________________Give detailed explanation...!!class 11science students plz help
Answer» Explanation: 2C(s) +3H 2 (g) → C 2 H 6 (g) ΔH F=-21.1 KCAL C(s) +O 2 (g) → CO 2 (g) ΔH f=-94.1 kcal H 2 (s) + 2 1 O 2 (g) → H 2 O(l) ΔH f=-68.3 kcal C 2 H 6 + 2 1 O 2 → 2CO 2 + 3 H 2 O ΔH f ′ ΔH f ′ =(21.1) -(2 X 91.1) -(68.3 x 3) =-372 kcal mor −1 Answered By

The standard molar heat of formation of ethane, CO2 and water (l) are −21.2,−94.1 and −68.3 kcal respectively. The standard molar heat of combustion of ethane will be ?_______________________Give detailed explanation...!!class 11science students plz help

Answer»

Explanation:

2C(s) +3H

(g) → C

(g)

ΔH

C(s) +O

(g) → CO

(g)

ΔH

f=-94.1 kcal

(s) +

(g) → H

O(l)

ΔH

f=-68.3 kcal

→ 2CO

+ 3 H

ΔH

′

ΔH

′

=(21.1) -(2 X 91.1) -(68.3 x 3)

=-372 kcal mor

−1

Answered By