Question

State what would you observe when: Sodium carbonate solution is mixed with calcium chloride solution.

Answer 1

1. Reactant: Sodium carbonate (Na₂CO₃), and Calcium chloride (CaCl₂).
2. Chemical reaction: When sodium carbonate is mixed with calcium chloride, soluble NaCl and a white precipitate of CaCO₃ is obtained.
3. Balanced chemical equation: ${\mathrm{Na}}_2{\mathrm{CO}}_3\left(\mathrm{aq}\right)+{\mathrm{CaCl}}_2\left(\mathrm{aq}\right)\to {\mathrm{CaCO}}_3\left(\mathrm{s}\right)+2\mathrm{NaCl}\left(\mathrm{aq}\right)$
4. Observation: A white precipitate is observed.
5. Type of reaction: Decomposition reaction