Here's how it works:
* Electrolysis: An electric current is passed through water. The water molecules are broken down into their constituent elements, hydrogen and oxygen.
* Electrodes: Two electrodes are placed in the water. One electrode is positively charged (anode) and the other is negatively charged (cathode).
* Reaction: At the cathode, water molecules gain electrons and are reduced to hydrogen gas (H2). At the anode, water molecules lose electrons and are oxidized to oxygen gas (O2).
Chemical Equation:
2H₂O(l) → 2H₂(g) + O₂(g)
Important Notes:
* Electrolysis requires a direct current (DC) source.
* The process is typically carried out in an electrolytic cell containing an electrolyte, such as sodium hydroxide or potassium hydroxide, to improve conductivity.
* The ratio of hydrogen to oxygen produced is always 2:1.
Applications of Water Electrolysis:
* Hydrogen production: Electrolysis is a key method for producing hydrogen, which can be used as a clean fuel.
* Oxygen production: Electrolysis can also produce oxygen, which has various industrial applications.
* Water purification: Electrolysis can be used to remove impurities from water.
Conclusion:
Water can be split into hydrogen and oxygen through the process of electrolysis. This is a crucial process in various applications, including hydrogen production, oxygen production, and water purification.
