Acids + Base Oxide → Salt + Water (Neutralisation)
Sulphuric acid + Iron(II) Oxide
Hydrochloric acid + Magnesium Oxide
Example of Experiment
- One spatula of copper(II) oxide powders is added to 5cm³ of hydrochloric acid in a test tube.
- The mixture is heated slowly and stirred with a glass rod.
- The observations are recorded.
- The black solid dissolves.
- The colourless solution turns blue.
- The copper(II) oxide powder (the black powder) has reacted with the hydrochloric acid.
- The blue colour solution contain copper(II) ions.