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  • Identify the correct statement about the following reactions occuring at 1000C. <img alt="\begin{aligned} & \mathrm{\mathrm{Zn}(\mathrm{s})+\frac{1}{2} \mathrm{O}_2(g) \rightarro

Identify the correct statement about the following reactions occuring at 1000C.

\begin{aligned} & \mathrm{\mathrm{Zn}(\mathrm{s})+\frac{1}{2} \mathrm{O}_2(g) \rightarrow Z n O(s) ; \Delta G^{\circ}=-360 \mathrm{~kJ} / \mathrm{mol}} \\ & \mathrm{C(s)+\frac{1}{2} \mathrm{O}_2(g) \rightarrow C O(s) ; \Delta G^{\circ}=-460 \mathrm{~kJ} / \mathrm{mol}} \end{aligned}

Option: 1

Zinc can be oxidised by CO


Option: 2

ZnO can be reduced by CO


Option: 3

ZnO can be reduced by C


Option: 4

None of the above


Answers (1)

best_answer

At 1000 oC, ΔGo of the formation of CO is more negative than that of ZnO. Hence, C will reduce ZnO to Zn and C itself gets oxidised to CO.

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