Question

The reaction of $P_4$ with $X$ leads selectively to $P_4O_6$. The $X$, is

• A. dry $O_2$
• B. a mixture of $O_2$ and $N_2$
• C. moist $O_2$
• D. $O_2$ in the presence of aqueous $NaOH$

Answer 1

Answer: (B)

In limited supply of oxygen, phosphorus is oxidised to its lower oxide $P_4O_6$ while excess of oxygen gives $P_4O_{10}$. A mixture of $O_2\,$ and $\, N_2$ is used for controlled oxidation of phosphorus into $P_4O_6$