What is the oxidation number of the phosphorus in Pyrophosphoric acid?
Oxidation number:
Calculating the oxidation number of Phosphorous(P) in Pyrophosphoric acid :
The oxidation state of Hydrogen(H) = +1
The oxidation state of Oxygen(O) = -2
Consider the oxidation state of Phosphorous(P) = x
Now,
Hence, the oxidation number of phosphorus in Pyrophosphoric acid is .