What is photolytic decomposition?

Photolytic decomposition is a type of chemical reaction in which a compound breaks down into simpler substances in the presence of light energy, usually sunlight.

Explanation:

• “Photo” means light, and “lysis” means breaking down.
• In this process, light provides the energy required to break chemical bonds in a compound.

Example:
A common example is the decomposition of silver chloride:
2AgCl → 2Ag + Cl₂ (in the presence of sunlight)

• Silver chloride (AgCl) breaks down into silver (Ag) and chlorine gas (Cl₂) when exposed to light.

Key Points:

• It is a type of decomposition reaction
• Requires light energy (photons)
• Commonly seen in photosensitive substances

Applications:

• Used in photography (black and white films)
• Important in understanding photosensitive chemical reactions

Conclusion:
Photolytic decomposition involves the breakdown of compounds using light energy and is an important concept in chemistry, especially in reactions involving sunlight.