Question

If bond energies of H₂ , Cl₂ and HCl are 104, 58, 103 kcal/mole respectively, then the value of ΔH_f of HCl(g) is 

(A) 19 kcal/mol 

(B) – 11 kcal/mol 

(C) 22 kcal/mol 

(D) – 22 kcal/mol

Answer 1

Correct Answer is: (D) – 22 kcal/mol