A $0.5\,\text{g}$ portion of calcium carbonate is added to excess dilute hydrochloric acid. $\text{CaCO}_3(s) + 2\text{HCl}(aq) \rightarrow \text{CaCl}_2(aq) + \text{H}_2\text{O}(l) + \text{CO}_2(g)$. What volume of $\text{CO}_2$ is formed at r.t.p.?
- A$0.12\,\text{dm}^3$
- B$0.18\,\text{dm}^3$
- C$0.24\,\text{dm}^3$
- D$12\,\text{dm}^3$