NEET UG CHEMISTRY MCQ: THERMODYNAMICS

The factor of $\Delta {G}$ values is important in metallurgy. The $\Delta {G}$ values for the following reactions at $800^{\circ} {C}$ are given as

$\begin{aligned} & {S}_2({~g})+2 {O}_2({~g}) \rightarrow 2 {SO}_2({~g}) ; \Delta {G}=-544 {~kJ} \\ & 2 {Zn}({s})+{S}_2({~g}) \rightarrow 2 {ZnS}({s}) ; \Delta {G}=-293 {~kJ} \\ & 2 {Zn}({s})+{O}_2({~g}) \rightarrow 2 {ZnO}({s}) ; \Delta {G}=-480 {~kJ} \end{aligned}$

The $\Delta {G}$ for the reaction,

$2 {ZnS}({s})+3 {O}_2({~g}) \rightarrow 2 {ZnO}({s})+2 {SO}_2({~g}) \text { will be }$