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  • Need clarity, kindly explain! Considering Ellingham diagram, which of the following metals can be used to reduce alumina ?

Considering Ellingham diagram, which of the following metals can be used to reduce alumina ? 

  • Option 1)

    Mg

  • Option 2)

    Zn

  • Option 3)

    Fe

  • Option 4)

    Cu

 

Answers (1)

best_answer

As we learnt that

Ellingham Diagram -

Ellingham diaghram normally consists of plots of \bigtriangleup fG^{\circ} Vs T for the formation of oxides of elements.

- wherein

2xM(s)+O2(g)\rightarrow 2MxO(s)

 

 Mg has more negative \Delta G value than alumina.

Metal which has more -\Delta G value can reduce  those metal oxide which has less -\Delta G value.


Option 1)

Mg

This is correct.

Option 2)

Zn

This is incorrect.

Option 3)

Fe

This is incorrect.

Option 4)

Cu

This is incorrect.

Posted by

Aadil

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