What is the heat of formation of HCl ( g ) from reaction H 2( g )+ Cl 2( g ) arrow 2 HCl ( g ) . Δ H =44 kcal.

Question

What is the heat of formation of HCl ( g ) from reaction H 2( g )+ Cl 2( g ) arrow 2 HCl ( g ) . Δ H =44 kcal. (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

The heat of formation of HCl is to be calculated on per mole of HCl produced. ∴ heat of formation of HCl =-(44/2)=-22 kcal.

Q. What is the heat of formation of $H Cl (g)$ from reaction $H_{2} (g) + C l_{2} (g) \to 2 H Cl (g) .Δ H = 44 k c a l$ .