A colourless solution is stated to contain a sodium salt. Experiments were done to find out which anion is present in the solution. Test results: - dilute hydrochloric acid: no observable change - dilute nitric acid followed by aqueous silver nitrate: no precipitate formed - dilute nitric acid followed by aqueous barium nitrate: no precipitate formed Which anion might the solution contain?
- Acarbonate
- Bchloride
- Cnitrate
- Dsulfate