Discussion
State the final product of the following reaction :
\(\text{Na}_{2}\text{CO}_{3} + \text{CO}_{2} + \text{H}_{2}\text{O} \rightarrow\) ?
Answer: A
The product is \(2\text{NaHCO}_{3}\).
Carbon dioxide passed through a solution of sodium carbonate converts it to sodium hydrogen carbonate (bicarbonate):
\[ \begin{aligned} &\text{Na}_{2}\text{CO}_{3} + \text{CO}_{2} + \text{H}_{2}\text{O} \\ &\rightarrow 2\text{NaHCO}_{3} \end{aligned} \]
The equation balances: 2 Na, 2 C, 2 H and 6 O on each side. \(\text{NaCO}_{3}\) is not a real compound, and adding an acidic gas such as carbon dioxide cannot turn a carbonate into the stronger base sodium hydroxide.
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