Question

Differentiate between the following:

Electrolytic decomposition and photochemical decomposition.

Answer 1

• Electrolytic decomposition: “A decomposition reaction which is brought about by the passage of electric current.”
  \[\ce{2H2O->[Electricity][Current]2H2 + O2}\]
• Photochemical decomposition: “A decomposition reaction which takes place in presence of light.”
  e.g. decomposition of silver salts in the presence of sunlight.