Solid X is examined using the method shown. Reaction with dilute aqueous sodium hydroxide: no reaction occurs. Flame test: a red flame is observed. Reaction with dilute hydrochloric acid: a gas is produced that turns limewater milky. What substance is X?
- Acopper(II) carbonate
- Blithium carbonate
- Cpotassium carbonate
- Dsodium sulfate