The oxoacid of phosphorus | p-Block Element| JEE MAIN 2021

JEE MAIN 2022

29-06-2022 - M1

Question

The oxoacid of phosphorus that is easily obtained from a reaction of alkali and white phosphorus and has two P-H bonds, is :

Select the correct option:

Phosphonic acid

Phosphinic acid

Pyrophosphorus acid

Hypophosphoric acid

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$\mathrm{P}_4+3 \mathrm{NaOH}+3 \mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{PH}_3+3 \mathrm{NaH}_2 \mathrm{PO}_2$
oxoacid = $\mathrm{H}_3 \mathrm{PO}_2$ (hypo phosphorus acid) or (phosphinic acid)

Question Tags

JEE Main

Chemistry

Easy

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