Question

What are photochemical reactions? Explain with the help of examples.

Answer 1

• Photochemical reactions- A chemical reaction take place by the action of light energy. Such reactions are called photochemical reactions.
• Example - Decomposition of silver chloride in the presence of light is a photochemical reaction.

$\underset{\mathrm{Silver}\mathrm{chloride}}{2\mathrm{AgCl}}\stackrel{\mathrm{Light}}{\to }\underset{\mathrm{Silver}}{2\mathrm{Ag}}+\underset{\mathrm{Chlorine}}{{\mathrm{Cl}}_2}$