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Explain the reducing behaviour of carbon...

Explain the reducing behaviour of carbon in the extraction of iron using Ellingham diagram.

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From the Ellingham diagram Below `710^(@)C` When CO oxidised to `CO_(2)` has lower `DeltaG^(0)`. Hence CO is used as `DeltaG^(0)` reducing agent below `710^(@)C`.
Above `710^(@)C` when C oxidised to CO has lower `DeltaG^(0)` value. Hence C is used as reducing agent above `710^(@)C`.
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Knowledge Check

  • NaCN is used in the extraction of

    A
    iron
    B
    copper
    C
    silver
    D
    zinc

  • Carbon reduction method is used in the extraction of :

    A
    Sn
    B
    Zn
    C
    Pb
    D
    All

  • In the extraction of iron the slag produced is

    A
    CO
    B
    `FeSiO_3`
    C
    `MgSiO_3`
    D
    `CaSiO_3`