1.

Give the method to prepare hypophosphorous acid and pyrophosphoric acid?

Answer»

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Solution :(i) Hypophosphorous acid : Phosphorous REACTS with WATER to give hypophosphorous acid.
`P_(4)+6H_(2)Orarr underset("(Hypophorous acid)")(3H_(3)PO_(2)+PH_(3))`
(ii) Pyrophosphoric acid : Phosphorous acid is heated they produce pyrophosphoric acid.
`underset("(Pyrophosphoric acid)")(2H_(2)PO_(3)overset(Delta)rarr H_(4)P_(2)O_(7)+H_(2)O)`


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