$\mathrm{Na}_{2} \mathrm{O}$ এর জলীয় দ্রবণ-

Solve: $\mathrm{Na}_{2} \mathrm{O}+\mathrm{H}_{2} \mathrm{O} \rightarrow 2 \mathrm{NaOH}(\mathrm{aq})$

$\mathrm{NaOH}(\mathrm{aq}) \rightarrow 2 \mathrm{Na}^{+}(\mathrm{aq})+2 \mathrm{OH}^{-}(\mathrm{aq})$