1.

In which of the following reaction oxidation of iron is not possible ?

Answer»

Recation in which rusting of iron plates.
Removal of colour of `CuSO_(4)` SOLUTION by iron
Liberation of `H_(2)` gas from water vapour by iron at high temperature.
Production of `Fe(CO)_(5)` from Fe.

Solution :Oxidation state `underset(0)underset(darr)(Fe)+5CO to underset(0)underset(UARR)(Fe)(CO)_(5)`
In this reaction oxidation state of iron does not CHANGE but it remain constant.
So oxidation of Fe does not possible.
In all rest OPTIONS, Fe(0) get converted into `Fe^(2+)`. i.e., oxidation of Fe into `Fe^(2+)` occurs.


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