Question

How many numbers of P-OH and P-O-P bonds are present in pyrophosphoric acid respectively?

• A. 3, 1
• B. 4, 1
• C. 4, 3
• D. 3, 3

Hint:

Pyrophosphoric acid contains four P-OH bonds and one P-O-P bond between two phosphate groups.

Answer 1

The Correct Option is B

Step 1: Structure of pyrophosphoric acid.
Pyrophosphoric acid contains two phosphate groups (PO₄) joined by an oxygen atom. There are four P-OH bonds (one from each phosphate group) and one P-O-P bond (connecting the two phosphate groups).

Step 2: Analyzing the options.
(A) 3, 1: Incorrect — There are four P-OH bonds, not three.
(B) 4, 1: Correct — There are four P-OH bonds and one P-O-P bond.
(C) 4, 3: Incorrect — There is only one P-O-P bond.
(D) 3, 3: Incorrect — There are four P-OH bonds, not three.

Step 3: Conclusion.
The correct answer is (B) 4, 1.