Explain the nature of boric acid

Question:

 Explain the nature of boric acid as a Lewis acid in water.

Solution:

Boric acid is a weak monobasic acid and acts as a Lewis acid by accepting electrons from a hydroxyl ion.

B(OH)3 + 2H2O → [B(OH)4] + H3O+

OH- is accepted by the Boric acid and the formation of hydroxyl ion takes place.

Thus, Boric acid act as a Lewis acid in water.

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