Problem: Calculate ΔH°rxn for the reaction 2 Ni(s) + 2 S(s) + 3 O2(g) → 2 NiSO3(s) from the following information: (1) NiSO3(s) → NiO(s) + SO2(g)       ΔH°rxn = 156 kJ   (2) S(s) + O2(g) → SO2(g)                 ΔH°rxn = -297 kJ    3) Ni(s) + 1/2 O2(g) → NiO(s)           ΔH°rxn = -241 kJ 

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Problem Details

Calculate ΔH°rxn for the reaction

2 Ni(s) + 2 S(s) + 3 O2(g) → 2 NiSO3(s)

from the following information:

(1) NiSO3(s) → NiO(s) + SO2(g)       ΔH°rxn = 156 kJ

(2) S(s) + O2(g) → SO2(g)                 ΔH°rxn = -297 kJ 

3) Ni(s) + 1/2 O2(g) → NiO(s)           ΔH°rxn = -241 kJ 

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