The correct statement regarding the given Ell | vedclass

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(A) In an Ellingham diagram,a metal can reduce the oxide of another metal if the line for the formation of its own oxide lies below the line for the f

Vedclass · Accepted Answer

At $1400\,^\circ C,$ $Al$ can be used for the extraction of $Zn$ from $ZnO$.

Vedclass · Answer

(A) In an Ellingham diagram,a metal can reduce the oxide of another metal if the line for the formation of its own oxide lies below the line for the formation of the other metal's oxide.$1$. At $1400\,^\circ C,$ the line for the formation of $Al_2O_3$ is below the line for the formation of $ZnO.$ Therefore,$Al$ can reduce $ZnO$ to $Zn$.$2$. At $500\,^\circ C,$ the line for the formation of $ZnO$ is below the line for the formation of $CO,$ so coke cannot reduce $ZnO$.$3$. The line for the formation of $CO$ is below the line for the formation of $Cu_2O$ at all temperatures,so coke can reduce $Cu_2O$.$4$. At $800\,^\circ C,$ the line for the formation of $ZnO$ is below the line for the formation of $Cu_2O,$ so $Cu$ cannot reduce $ZnO$.Thus,option $A$ is correct.

The correct statement regarding the given Ellingham diagram is

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