1. Images

2. Passing electricity through calcium sulfate solution produces oxygen and hydrogen gases

3. Passing electricity through calcium sulfate solution produces oxygen and hydrogen gases

4. Part of the reactivity series
Part of the reactivity series. The reactivity series lists metals in order of how vigorously they react with substances such as oxygen and water.

5. Part of the reactivity series
Part of the reactivity series. The reactivity series lists metals in order of how vigorously they react with substances such as oxygen and water.

6. The electrolysis of brine

7. The electrolysis of brine
The electrolysis of brine. The diaphragm keeps the chlorine away from the sodium hydroxide solution.

8. Cells for the electrolysis of brine
James Holmes, Hays Chemicals/SPL
Cells for the electrolysis of brine