Question

Give one word for the following

Reactions which proceed by absorbing sun's energy

Answer 1

Photochemical reaction:

• A reaction that proceeds with the absorption of light energy is called a photochemical reaction.
• For example, hydrogen($\mathrm{H}$) reacts with chlorine($\mathrm{Cl}$) in the presence of sunlight.
• $\underset{\mathrm{hydrogen}\mathrm{gas}}{{\mathrm{H}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{chlorine}\mathrm{gas}}{{\mathrm{Cl}}_2\left(\mathrm{g}\right)}\stackrel{\mathrm{diffused}\mathrm{sunlight}}{\to }\underset{\mathrm{hydrochloric}\mathrm{acid}}{2\mathrm{HCl}\left(\mathrm{g}\right)}$