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Question
Give the disproportionation reaction of H3PO3
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Solution
On heating, orthophosphorus acid (H3PO3) disproportionates to give orthophosphoric acid (H3PO4) and phosphine (PH3). The oxidation states of P in various species involved in the reaction are mentioned below.
\[\ce{4H3\overset{+3}{PO3} -> \overset{-3}{PH3} + 3H3\overset{+5}{PO4}}\]
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