Question

Which of the following is an amphoteric hydroxide?

• A. $Sr(OH{)}_2$
• B. $Ca(OH{)}_2$
• C. $Mg(OH{)}_2$
• D. $Be(OH{)}_2$

Answer 1

The correct option is D $Be(OH{)}_2$

$Be(OH{)}_2$ is amphoteric in nature, since it can react with both acids and bases.

$Be(OH{)}_2$ + $2HCl$ $⟶$ $BeC{l}_2$ + $2H_{2}O$

$Be(OH{)}_2$ + $2NaOH$ $⟶$ $N{a}_2\left[Be\right(OH{)}_4]$

$Sr(OH{)}_2$, $Ca(OH{)}_2$ and $Mg(OH{)}_2$ are basic in nature.