The equation for the reaction between aqueous calcium nitrate and aqueous sodium hydroxide is shown. $\text{Ca}({\text{NO}}_3)_2(\text{aq}) + 2\text{NaOH}(\text{aq}) \rightarrow \text{Ca(OH)}_2(\text{s}) + 2\text{NaNO}_3(\text{aq})$. Which separation process is used to remove calcium hydroxide from the reaction mixture?
- Achromatography
- Bcrystallisation
- Cdistillation
- Dfiltration