Question

Benzene diazonium chloride when reacts with hypophosphorus acid produces:

• A. benzene
• B. phenyl isocyanide
• C. phenol
• D. phenyl phosphate

Answer 1

Answer: (A)

benzene

If a diazonium salt is reacted with hypophosphorous acid H3PO2 which is a reducing agent the salt is reduced to H.

Benzene diazonium chloride when reacts with hypophosphorus acid produces benzene.

$C_6{H}_5-N_2^{+}C{l}^{-}+H_{3}P{O}_2+H_{2}O\to C_6{H}_6+N_2\uparrow +H_{3}P{O}_3+HX$

Hence, option $A$ is correct.