(A) $H_3BO_3$ (orthoboric acid) is a very weak monoprotic Lewis acid,not a strong tribasic acid.It acts as a Lewis acid by accepting an $OH^-$ ion fro

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(A) $H_3BO_3$ (orthoboric acid) is a very weak monoprotic Lewis acid,not a strong tribasic acid.It acts as a Lewis acid by accepting an $OH^-$ ion from water molecules,releasing $H^+$ ions in the process: $B(OH)_3 + 2H_2O \rightleftharpoons [B(OH)_4]^- + H_3O^+$.Therefore,the statement that it is a strong tribasic acid is incorrect.

Class 11 Chemistry p-Block Elements (Class 11)Boron family

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Which of the following statements about $H_3BO_3$ is not correct?

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A
It is a strong tribasic acid
B
It is prepared by acidifying an aqueous solution of borax
C
It has a layer structure in which planar $BO_3$ units are joined by hydrogen bonds
D
It does not act as proton donor but acts as a Lewis acid by accepting hydroxyl ion