Exam

JEE Main

Year

2020

Date

8 January

Shift

Evening Shift

Subject

Chemistry

Chapter

p Block Elements (Group 15, 16, 17 & 18)

JEE Main 2020 · 8 January · Evening Shift · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

White phosphorus on reaction with concentrated NaOH solution in an...

White phosphorus on reaction with concentrated $NaOH$ solution in an inert atmosphere of $C{O}_{2}$ gives phosphine and compound \left(X\right) . \left(X\right) on acidification with $HCl gives$compound \left(Y\right) .$The basicity of compound \left(Y\right)$ is:

Step-by-step solution

${\text{P}}_{4} + 3\text{NaOH} + 3{\text{H}}_{2} \text{O} \to \mathop{3{\text{NaH}}_{2} {\text{PO}}_{2}}_{\left(\text{x}\right)} + {\text{PH}}_{3}$

${\text{NaH}}_{2} {\text{PO}}_{2} + \text{HCl} \to \text{NaCl} + \mathop{{\text{H}}_{3} {\text{PO}}_{2}}_{\left(\text{Y}\right)}$