$2.5$

$4$

$5$

$10$

The degree of dissociation of a weak base is directly proportional to square root of its concentration.

The degree of dissociation of a weak base is inversely proportional to square root of its concentration.

The degree of dissociation of a weak base doesn't depend on concentration.

The degree of dissociation of a weak base is directly proportional to its concentration

For basic solution, $[\text{H}_3\text{O}^+] = [\text{OH}^-]$

In basic solution, the excess of $\text{OH}^-$ ions are present.

In the basic solution, there is excess of $\text{H}_3\text{O}^+$ ions.

The pOH of a basic solution can be calculated by pOH = $-\log[\text{H}^+]$

$\text{Zn} + \text{H}_2\text{SO}_4 \rightarrow \text{ZnSO}_4 + \text{H}_2$

$\text{Al(OH)}_3 + 3\text{HCl} \rightarrow \text{AlCl}_3 + 3\text{H}_2\text{O}$

$\text{Mg} + 1/2 \text{O}_2 \rightarrow \text{Mg}^{2+} + \text{O}^{2-}$

$\text{Fe}_{(s)} + \text{Cu}^{2+}_{(aq)} \rightarrow \text{Fe}^{2+}_{(aq)} + \text{Cu}_{(s)}$