H3PO2 is a stronger reducing agent than H3PO3. Why?
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The hydrogen atoms in OH bond are ionisable and are acidic whereas the P-H bonds have reducing property. The number of P-H bonds is more in H₃P0₂ than H₃PO₃. Therefore, it is stronger reducing agent than H₃PO₃.
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Hey !!
In H₃PO₂, oxidation state of P is +1 which can be further oxidized to a higher oxidation state. While in H₃PO₄, oxidation state of P is +5, which is highest for P. It cannot be further oxidized. Hence, H₃PO₄ is a weaker reducing agent.
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