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Chemistry Question on p -Block Elements

H3BO3H_3BO_3 is a weak acid. Water extracts the proton of H3BO3H_3BO_3.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Answer

If assertion is true but reason is false.

Explanation

Solution

HBO is a very weak monobasic acid (K = 5.6 ? 10) but it does not act as a proton donor. It behaves as a Lewis acid i.e., it accepts a pair of electrons from OH ion of HO. H−OH+B(OH)3−>[B(OH)4]−+H+ {H - OH + B(OH)3 -> [B(OH)4]^{-} + H+}