Explanation:
Bases are those substance which releases hydroxide ions in aqueous solution when dissolved in water.
[tex]BOH(aq)\rightarrow B^+(aq)+OH^-(aq)[/tex]
As we can see that in formula of aluminium hydroxide , there are 3 hydroxide ions attached to single aluminum ion. So, when we will dissolve the aluminum hydroxide in water it will give aluminum ions and hydroxide ions in its solution.
[tex]Al(OH)_3(aq)\rightarrow Al^{3+}(aq)+3OH^-(aq)[/tex]
