The factor of ΔG values is important in metallurgy. The ΔG values for the following reactions at 800

Question

The factor of ΔG values is important in metallurgy. The ΔG values for the following reactions at 800^o C are given as follows.

S₂(s) + 2O₂(g) → 2SO₂(g): ΔG = −544 kJ

2Zn(s) + S₂(s) → 2ZnS(s): ΔG = −293 kJ

2Zn(s) + O₂(g) → 2ZnO(s): ΔG = −480 kJ

The ΔG for the reaction 2ZnS(s) + 3O₂(g) → 2ZnO(s) + 2SO₂(g) will be

Accepted Answer

From $(a) - (b) + (c);$$\Delta H = ( - 544) - (293) + ( - 480) = - 731	ext{ kJ}$

Question