A) Orthophosphorous and hypophosphoric acids
B) Pyrophosphorous and pyrophosphoric acids
C) Orthophosphorous and pyrophosphorous acids
D) Pyrophosphorous and hypophosphoric acids
Correct Answer: C
Solution :
[c] Phosphorus acid contain P in +3 oxidation state.Acid | Formula | Oxidation state of Phosphorus |
Pyrophosphorus acid | \[{{H}_{4}}{{P}_{2}}{{O}_{5}}\] | +3 |
Pyrophosphoric acid | \[{{H}_{4}}{{P}_{2}}{{O}_{7}}\] | +5 |
Orthophosphorus acid | \[{{H}_{3}}P{{O}_{3}}\] | +3 |
Hypophosphoric acid | \[{{H}_{4}}{{P}_{2}}{{O}_{6}}\] | +4 |
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