The correct statement(s) for orthoboric acid is/are\

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Professor PC Thomas Classes · Answer

(b, d) : (b) $\mathrm{H}_{3} \mathrm{BO}_{3}$ behaves as a weak monobasic acid i.e., Lewis acid. It accepts a pair of electrons from $\mathrm{OH}^{-}$ion. $\mathrm{H}-\mathrm{OH}+\mathrm{B}(\mathrm{OH})_{3} ightarrow\left[\mathrm{~B}(\mathrm{OH})_{4}ight]^{-}+\mathrm{H}^{+}$\

On adding ethylene glycol, its acidity increases.\ 
$\mathrm{H}_{3} \mathrm{BO}_{3}$ does not undergo self-ionization and planar $\mathrm{BO}_{3}^{3-}$ units are joined by unsymmetrical hydrogen bonds to give a layered structure.\