Question

In a molecule of pyrophosphoric acid, the number of P–OH, P=O and P–O–P bonds/ moiety(ies) respectivey are : 

(1) 3, 3 and 3 

(2) 2, 4 and 1 

(3) 4, 2 and 0 

(4) 4, 2 and 1

Answer 1

(1) 3, 3 and 3

Pyrophosphoric acid.

P – OH linkages = 4 

P = O linkages = 2 

P–O–P linkages = 1