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JEE PYQ: P Block Elements Question 9

Question 9 - 2021 (18 Mar Shift 1)

The number of ionisable hydrogens present in the product obtained from a reaction of phosphorus trichloride and phosphonic acid is:

(1) 3

(2) 0

(3) 2

(4) 1

Show Answer

Answer: (3)

Solution

$\text{PCl}_3 + \text{H}_3\text{PO}_3 \to \text{H}_4\text{P}_2\text{O}_5$. The product has two ionisable H atoms (two P-OH groups).


Learning Progress: Step 9 of 77 in this series