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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 ......... :
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Verified Answer
The correct answer is:
basic; $\mathrm{Na}_2 \mathrm{CO}_3$ and $\mathrm{CaCO}_3$
$\mathrm{Na}_2 \mathrm{O}+\mathrm{CaO}+\mathrm{H}_2 \mathrm{O}+\mathrm{CO}_2 \longrightarrow$ $\mathrm{Na}_2 \mathrm{CO}_3+\mathrm{CaCO}_3$
Solution is basic. It can be proved as
$\mathrm{CO}_3^{2-}+2 \mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{H}_2 \mathrm{CO}_3+2 \mathrm{OH}^{-}$
Solution is basic. It can be proved as
$\mathrm{CO}_3^{2-}+2 \mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{H}_2 \mathrm{CO}_3+2 \mathrm{OH}^{-}$
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