CSEC Chemistry · May/June 2011 · Paper 1 · Question Q22

The ionic equation for the reaction between an acid and a carbonate may be represented as

1. (A)\text{H}^+(\text{aq}) + \text{CO}_3{}^{2-}(\text{aq}) \rightarrow \text{HCO}_3{}^-(\text{aq})
2. (B)2\text{H}^+(\text{aq}) + \text{CO}_3{}^{2-}(\text{aq}) \rightarrow \text{H}_2\text{CO}_3(\text{aq})
3. (C)2\text{H}^+(\text{aq}) + \text{CO}_3{}^{2-}(\text{aq}) \rightarrow \text{CO}_2(\text{g}) + \text{H}_2\text{O}(\text{l})
4. (D)\text{H}^+(\text{aq}) + \text{CO}_3{}^{2-}(\text{aq}) \rightarrow \text{CO}_2(\text{g}) + \text{H}_2\text{O}(\text{l})