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Is boric acid a protic acid ? Explain. |
Answer» Solution :No boric acid is not a PROTIC acid as it does not ionise in water to GIVE a proton `(H^+)` or hydronium `(H_3 O^+)` ion. In contrast, due to small size of boron ATOM and presence of only six electrons in the valence SHELL of boron in the molecule, `H_3BO_3` acts as a Lewis acid. When treated with water , it ACCEPTS a lone pair of electrons from the oxygen atom of the `H_2 O` molecule to form `[B(OH)_4]^-` Due to the release of a proton in the above reaction, it acts as a weak monobasic acid. |
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