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Give the disproportionation reaction of ...

Give the disproportionation reaction of `H_3PO_3`.

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Phosphorus disproportionates in all intermediate states of (-3) to (+5).
`underset(+3)(4H_(3)PO_(3)) overset(Delta) to underset(+5)(3H_(3)PO_(4)) + underset(-3)(PH_(3))`
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  3. Give the disproportionation reaction of H3PO3.

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