Phosphorus acid can act both as oxidising agent as well as reducing agent while phosphoric acid is only an oxidising agent. Explain. " " Or Phosphorus acid undergoes disproportionation reaction but phosphoric acid does not. Explain.

Phosphorus acid can act both as oxidising agent as well as reducing ag

1.	Phosphorus acid can act both as oxidising agent as well as reducing agent while phosphoric acid is only an oxidising agent. Explain. " " Or Phosphorus acid undergoes disproportionation reaction but phosphoric acid does not. Explain.
Answer» The behaviour is linked with the oxidation state of phosphorus atom in the two acids.In phosphorus acid `(H_(3)OPO_(3))`. the oxidation state of P is +3.It is in a position to increase its oxidation state (acts as redcuiing agent) as well as sdecrease it (acts as oxidising agent).The oxidation state of phosphorus in phosphoric acid `(H_(3)PO_(4))` is +5 .Since it cannot increase it vbeyond 5, it cannot act as reducing agent .Hower it can behave as oxidising agent bty decreasing its oxidation state.

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Phosphorus acid can act both as oxidising agent as well as reducing agent while phosphoric acid is only an oxidising agent. Explain. " " Or Phosphorus acid undergoes disproportionation reaction but phosphoric acid does not. Explain.

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