Question

Incorrect statement for pyrophosphorus acid $H_4{P}_2{O}_5$ is :

• A. contains $P$ in $+5$ oxidation state
• B. it is dibasic acid
• C. it is strongly reducing in nature
• D. it contains one P—O—P bond

Answer 1

Answer: (A)

Pyrophosphorous acid $\left(H_4{P}_2{O}_5\right)$ contains $P$ atom in $+3$ oxidation state.