p-Block elementsHardBloom L3

Question

The species that undergo(es) disproportionation in an alkaline medium is/are

Options

A.Cl2
B.$MnO_{4}^{2–}$
C.P4
D.$ClO_{4}^{–}$

Solution

Sol. Disproportionation is a specific type of redox reaction in which a species is simultaneously reduced and oxidised to form two different products. In Cl2​, oxidation state of Cl is 0 so it can give disproportionation reaction because Cl shows oxidation state from −1 to +7. In MnO4​2−, oxidation state of Mn is +6 so it can give disproportionation reaction because Mn shows oxidation state of +2,+3,+4,+6,+7. In ClO4​−, oxidation state of Cl is +7 which is its highest oxidation state. It can be reduced so it cannot give disproportionation reaction.

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