The factor of values is important in metallurgy. The values for the following reactions at are given — Thermodynamics and Thermochemistry Chemistry Question

Question

The factor of $\Delta G$ values is important in metallurgy. The $\Delta G$ values for the following reactions at $800^\circ\text{C}$ are given as:<br>$\text{S}_2\text{(s)} + 2\text{O}_2\text{(g)} \to 2\text{SO}_2\text{(g)}; \Delta G = -544\text{ kJ}$<br>$2\text{Zn(s)} + \text{S}_2\text{(s)} \to 2\text{ZnS(s)}; \Delta G = -293\text{ kJ}$<br>$2\text{Zn(s)} + \text{O}_2\text{(g)} \to 2\text{ZnO(s)}; \Delta G = -480\text{ kJ}$<br>The $\Delta G$ for the reaction: $2\text{ZnS(s)} + 3\text{O}_2\text{(g)} \to 2\text{ZnO(s)} + 2\text{SO}_2\text{(g)}$ will be