Question

Select from the following a decomposition reaction in which source of energy for decomposition is light:

Options

• \[\ce{2FeSO4 -> Fe2O3 + SO2 + SO3}\]

• \[\ce{2H2O -> 2H2 + O2}\]

• \[\ce{2AgBr -> 2Ag + Br2}\]

• \[\ce{CaCO3 -> CaO + CO2}\]

Answer 1

\[\ce{2AgBr -> 2Ag + Br2}\]

Explanation:

Photochemical decomposition is a breakdown that uses light as its energy source. Among the options given, the reaction involving silver bromide (\[\ce{2AgBr -> 2Ag + Br2}\]) is a photochemical decomposition reaction.