A mixture of sodium oxide and calcium oxide are dissolved in water, and saturated with excess carbon dioxide…
A mixture of sodium oxide and calcium oxide are dissolved in water, and saturated with excess carbon dioxide gas. The resulting solution is ...... It contains ......... :
basic; $\mathrm{NaOH}$ and $\mathrm{Ca}(\mathrm{OH})_2$
neutral; $\mathrm{Na}_2 \mathrm{CO}_3$ and $\mathrm{CaCO}_3$
basic; $\mathrm{Na}_2 \mathrm{CO}_3$ and $\mathrm{CaCO}_3$
acidic; $\mathrm{NaOH}$ and $\mathrm{CaCO}_3$
Solution
$\mathrm{Na}_2 \mathrm{O}+\mathrm{CaO}+\mathrm{H}_2 \mathrm{O}+\mathrm{CO}_2 \longrightarrow$ $\mathrm{Na}_2 \mathrm{CO}_3+\mathrm{CaCO}_3$
Solution is basic. It can be proved as
$\mathrm{CO}_3^{2-}+2 \mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{H}_2 \mathrm{CO}_3+2 \mathrm{OH}^{-}$