Question

Which of the following statements are correct statement(s) about pyrophosphoric acid ($H_4{P}_2{O}_7$)?

• A. It contains P in $+5$ oxidation state
• B. It is dibasic acid
• C. It is a reducing agent
• D. It contains one P-O-P bond

Answer 1

Answer: (A), (D)

The correct options are
A It contains P in $+5$ oxidation state
D It contains one P-O-P bond

Structure of $H_4{P}_2{O}_7$ is shown in figure. Oxidation state of $P$ is +5 and it has one $P-O-P$ bond.