Electrolysis of Water: Separating Hydrogen and Obtaining Liquid Oxygen
In the process of electrolysis of water, an electric current is passed through water to break it down into its constituent elements - hydrogen and oxygen. This process involves the use of an electrolytic cell equipped with electrodes and an electrolyte solution.

Separating Hydrogen from Water:
- When the electric current is passed through the water, it causes the water molecules (H2O) to split into hydrogen gas (H2) at the cathode and oxygen gas (O2) at the anode.
- The hydrogen gas is collected at the cathode, where reduction reaction occurs, while the oxygen gas is collected at the anode, where oxidation reaction occurs.

Obtaining Liquid Oxygen:
- To obtain liquid oxygen from the oxygen gas collected during the electrolysis of water, the gas needs to be cooled down to its boiling point (-183 degrees Celsius).
- Once the oxygen gas is cooled to this temperature, it condenses into a pale blue liquid known as liquid oxygen.
- Liquid oxygen is widely used in various industrial applications and in rocket propulsion due to its high oxidizing properties.

Conclusion:
In conclusion, by carrying out the process of electrolysis of water, it is possible to separate hydrogen from water and obtain liquid oxygen. This process is not only scientifically fascinating but also has practical applications in various fields.