JEE Advanced 2021 Chemistry question

The correct statement(s) related to oxoacids of phosphorous is(are)

(A)Upon heating, undergoes disproportionation reaction to produce and .Correct
(B)While can act as reducing agent, cannot.Correct
(C) is a monobasic acid.
(D)The H atom of P–H bond in is not ionizable in water.Correct

Answer: (A),(B),(D)

Solution

Phosphorous acid is with one P–H bond and P in the +3 state. (A) (P: +3 → +5 and −3) – correct. (B) The P–H bond (and P(+3)) makes a reducing agent; in

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Question ID VK-033921