Phosphorus forms a number of oxoacids as given in below table.
Oxoacids of phosphorus
| Name | Formula | Oxidation state of P |
|---|---|---|
| Hypophosphorus acid | H3PO2 | +1 |
| Phosphorus acid | H3PO3 | +3 |
| Hypophosphoric acid | H4P2O6 | +4 |
| Orthophosphoric acid | H3PO4 | - |
| Diphosphoric acid (Pyrophosphoric acid) | H4P2O7 | +5 |
| Metaphosphoric acid | HPO3 | +5 |
| Peroxophosphoric acid | H3PO5 | +7 |
Among the oxoacids of phosphorus, orthophosphoric acid is the most important and is used in the manufacture of phosphate fertilizers.
The structures of oxoacids of phosphorus are systematically given ahead:
The formulae of oxoacids of P can be remembered as:
The prefix
a) meta acid is used for the acid obtained by the loss of one water molecule.
b) pyro acid is used for the acid obtained by heating two molecules with loss of one water molecule.
c) hypo is generally used for the acid having lower oxygen content than the parent acid.
However. it may be noted that metaphosphoric acid does not exist as simple monomer; it exists are cyclometaphosphoric acid or polymetaphosphoric acid.
15 comments:
THIS WAS SO HELPFUL! Thank you so much!
Thanks this i a good way to learn and understand
is there any same type of method to learn sulfur acids also
Thanks this i a good way to learn and understand
is there any same type of method to learn sulfur acids also
thank you so much this is easy to take as short notes
Ar u mad how can u say O.S of phosphorus as +7 in H3PO5
Here P has +5 O.S due to peroxide
Ar u mad how can u say O.S of phosphorus as +7 in H3PO5
Here P has +5 O.S due to peroxide
Ar u mad how can u say O.S of phosphorus as +7 in H3PO5
Here P has +5 O.S due to peroxide
Ar u mad how can u say O.S of phosphorus as +7 in H3PO5
Here P has +5 O.S due to peroxide
Ar u mad how can u say O.S of phosphorus as +7 in H3PO5
Here P has +5 O.S due to peroxide
Thank you so much. This is so clearly presented ����
How can Phosphorus have +7 oxidation state when phosphorus belongs to VA?
No it is +7 only
3(1)+x+5(-2)=0
3+x-10=0
X+3=10
X=10-3=+7
No it's +7
3(1)+x+5(-2)=0
3+x-10=0
X=10-3
X=+7
It is chemistry and not simple maths. There are concepts behind o.s . The max o.s of phosphorus can only be +5. And iy can never be +7. Due to formation of peroxide bond. +5 o.s is right.
This is chrmistry and not just maths. Use your brains. How is it even possible for phosphorous to have a +7 o.s. it can attain a max value of +5. And here your maths fails because of peroxide bond formation.
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