The correct statement regarding the given Ellingham diagram is:

Engineering

Chemistry

Ellingham Diagram

Question

At 500°C, coke can be used for the extraction of Zn from ZnO.

At 1400°C, Al can be used for the extraction of Zn from ZnO.

At 800°C, Cu can be used for the extraction of Zn from ZnO.

Coke cannot be used for the extraction of Cu from Cu₂O.

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4Al + 6ZnO $\to_{}^{}$ 2Al O + 6Zn

$∆$ H for the above reaction is –ve.