Reaction of thionyl chloride with white phosphorus forms a compound [A], which on hydrolysis gives [B], a dibasic acid.…
p-Block Elements (Class 12) · Class 12 · JEE Main Previous Year Question
Reaction of thionyl chloride with white phosphorus forms a compound [A], which on hydrolysis gives [B], a dibasic acid. [A] and [B] are respectively
- a
and
- b✓
and
- c
and
- d
and
and
Strategy: Analyze the reaction sequence involving phosphorus and thionyl chloride.
Step 1: Identifying A The reaction of white phosphorus with thionyl chloride yields phosphorus trichloride: Thus, A is .
Step 2: Identifying B The hydrolysis of yields phosphorous acid: B is . It is a dibasic acid because it contains two ionisable protons (its structure is ).
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