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  Inorganic Chemistry

OXYACIDS OF PHOSPHORUS :

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Phosphorus forms a number of oxyacids which differs in their structure and oxidation state of phosphorus. These are H3 PO2, H3PO3, H4P2O6, H3PO4 , (HPO3) n, H4 P2O5, H4P2O7 . From these H3PO2, H3PO3 are reducing agents. H4P2O5 (pyrophosphoric acid) is dibasic acid.

( HPO3 )n is formed by dehydration of H3PO4 at 316oC .

Oxyacids of phosphorus

Name

Oxidation state of P and Basicity

Structure

Structure.JPG

Hypophosphorous acid H3PO2

+1
Monobasic
  

Phosphorous s acid H3PO3
+3
Dibasic
OXYACIDS OF PHOSPHORUS.JPG

Hypophosphoric acid H4P2O6

+4
Tetrabasic
Hypophosphoric acid.JPG

Orthophosphoric acid H3PO4

+5
Tribasic
Orthophosphoric acid.JPG

Metaphosphoric acid ( HPO3 )n

+5
Monobasic
Metaphosphoric acid.JPG

Pyrophospric acid

(Diphosphoric acid). H4P2O7

+5
Tetrabasic
Oxyacids of phosphorus-.JPG

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