Below is the energy level diagram for the reaction H 2(g) + F 2(g) HF (g) (a) Calculate the heat of formation

Below is the energy level diagram for the reaction

½ H_2(g) + ½ F_2(g) → HF_(g)

(a) Calculate the heat of formation of HF _(g) ( 2 msk)

(b) Is this reaction exothermic or endothermic?

Enerav (KJ) 411 389 100 Hagl + F2 Reaction co-ordinate HF(g)