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17/02/2022 5:41 pm
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What happens when H3PO3 is heated?
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17/02/2022 5:48 pm
H3PO3, on heating, undergoes disproportionation reaction to form PH3 and H3PO4. The oxidation numbers of P in H3PO3, PH3, and H3PO4 are +3, -3, and +5 respectively. As the oxidation number of the same element is decreasing and increasing during a particular reaction, the reaction is a disproportionation reaction.
4H3PO3 \(\overset{\Delta}\longrightarrow\) 3H3PO4 + PH3 (Phosphine (-3))