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What happens when H_(3) PO_(3) is heated ? |
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Answer» Solution :The oxidation state of P in `H_(3)PO_(3)" is "+3`. Since this VALUE is intermediate between the highest (+5) and lowest(-3) oxidation states of P, therefore, when `H_(3)PO_(3)` is HEATED it undergoes DISPROPORTIONATION to form `PH_(3)andH_(3)PO_(4)` with oxidation states of -3 and +5 respectively. `UNDERSET("Orthophosphorous acid")overset(+3)(4H_(3)PO_(3))overset("Heat")tounderset("Phosphine")overset(-3)(PH_(3))+underset("Orthophosphoric acid")overset(+5)(H_(3)PO_(4))` |
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