Electrolysis of Water

Nuclear submarines use Electrolysis to produce Oxygen for the crew when staying under water for months at a time.

If a direction current is passed through water, Hydrogen and Oxygen are given off at the electrodes.

The electrolysis of dilute Hydrochloric Acid produces hydrogen gas and chlorine gas.

To test for oxygen, light a splint but then blow it out so that the end of the splint is still glowing. Put the splint into the test tube. If the test tube has oxygen in it, the splint will relight into a flame again.

Hydrogen uses

• Rocket fuel

Oxygen Uses

• We all need to breathe Oxygen to live.
• In hospitals, patients with breathing problems are given extra Oxygen.
• Enclosed places such as nuclear submarines or spacecrafts - either carried in cylinders or made using Electrolysis.