ou are given the following data.

Question

S(s) + 3/2 O2(g) → SO3(g) ΔH = -395.2 kJ
2 SO2(g) + O2(g) → 2 SO3(g) ΔH = -198.2 kJ

Calculate ΔH for the reaction below.
S(s) + O2(g) → SO2(g)

Answer 1

delta H=-395.2kJ+1/2 198.2