Question

Consider the following reaction :
$A +$ alkali $\rightarrow B$ (Major Product)
If $B$ is an oxoacid of phosphorus with no $P - H$ bond, then $A$ is :

• A. White $P _{4}$
• B. Red $P_{4}$
• C. $P _{2} O _{3}$
• D. $H _{3} PO _{3}$

Answer 1

Answer: (B)

Red $P _{4}+$ Alkali $\rightarrow H _{4} P _{2} O _{6}( No P - H$ bond $)$