Can aluminium hydroxide be split into Al 3+ and OH-? When writing a net ionic equation containing aluminum hydroxide, can the aluminum hydroxide be split into ions of $\ce{Al^3+}$ and $\ce{OH-}$, or does it stay as $\ce{Al(OH)3}$?
Aluminum hydroxide has poor solubility in water (solubility product $3 \times 10^{-34}$).

However, $\ce{Al(OH)3}$ is amphoteric and soluble in acids and bases. An excess of $\ce{OH-}$ will form tetrahydroxidoaluminate:

$\ce{Al(OH)3 + OH- &lt;=&gt; [Al(OH)4]-}$