Which of the following statements about hydrochloric acid is correct?
- AHydrochloric acid reacts with magnesium carbonate to form three different products.
- BHydrochloric acid reacts with magnesium to form magnesium chloride and water.
- CWhen hydrochloric acid is added to a colourless solution of thymolphthalein, it turns blue.
- DWhen hydrochloric acid is warmed with ammonium chloride, ammonia is formed.