Question

Which of the following is acidic in nature?

• A. $B(OH{)}_3$
• B. $Mg(OH{)}_2$
• C. $Al(OH{)}_3$
• D. $B(OH{)}_3$

Answer 1

The correct option is D

$B(OH{)}_3$

$B(OH{)}_3$ can accept one hydroxyl ion from water $\&$ proton is released. Thus, it acts as a lewis acid.

$B(OH{)}_3$ + $H_{2}O$ $\to$ ${\left[B\right(OH{)}_4]}^{-}$ + $H^{+}$