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JEE Main 202227 JuneMorning Shift

Exam: JEE Main
Year: 2022
Date: 27 June
Shift: Morning Shift
Subject: Chemistry
Chapter: p Block Elements (Group 15, 16, 17 & 18)

JEE Main 2022 · 27 June · Morning Shift · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Heating white phosphorus with conc. NaOH solution gives mainly

Heating white phosphorus with conc.

NaOH

solution gives mainly

Options

A ${Na}_{3}P$ and ${H}_{2}O$
B ${H}_{3}PO$ and $NaH$
CP{ $\left(OH\right)}_{3}$ and ${NaH}_{2}{PO}_{4}$
D ${PH}_{3}$ and ${NaH}_{2}{PO}_{2}$

Correct answer

D. ${PH}_{3}$ and ${NaH}_{2}{PO}_{2}$

Step-by-step solution

White phosphorous dissolves in boiling NaOH solution (in a

{CO}_{2}

atmosphere) to give phosphine,

{PH}_{3}

.

${P}_{4} + 3NaOH + 3{H}_{2}O \to 3{NaH}_{2}{PO}_{2} + {PH}_{3}$

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