According to Ellingham diagram the oxida...

According to Ellingham diagram the oxidation reaction of carbon and carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature?

` Al_ 2O _ 3 `

` Cu_ 2 O `

`MgO `

`ZnO `

Text Solution

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The correct Answer is:

The graph of ` Delta _f G^(@) ` vs T in the Ellingham diagram shows that ` Cu-Cu_2 O ` line is atmost at the top (i.e., much higher than those of ` Al - Al_ 2 O _ 3 , Mg - Mg O , Zn - ZnO and Fe- FeO ` lines ). Therefore, ` Cu_ 2 O ` can be reduced to Cu at the lowest temperature.

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According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature ?

`Al_(2)O_(3)`

`Cu_(2)O`

`MgO`

`ZnO`

According to Ellinigliam diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest tempertaure

`Al_(2)O_3`

`Cu_(2)O`

MgO

ZnO

Carbon and CO gas are used to reduce which of the following pairs of metal oxides for extraction of metals?

`FeO, SnO`

`SnO, ZnO `

`BaO, Na_2 O_2`

`FeO,ZnO `