What is the basicity of Peroxodiphosphoric  acid?

1 2 3 4

4

The correct answer is option 4. 4.  Peroxodiphosphoric acid is represented chemically as H4P2O8, is an oxoacid of phosphorus. It is tetrabasic in nature. This is due to the presence of four P – OH bonds that are present in the molecule which help release four H+ ions.