Question

Give examples for for decomposition reaction classifying them as thermal decomposition electrical decomposition and photolytic decomposition

Answer 1

Dear student,

• • Thermal decomposition reaction A thermal decomposition reaction can be defined as a decomposition reaction which is activated by thermal energy. The reaction is generally endothermic as energy is required to break chemical bond in order to separate the constituent elements.
    • example of thermal decomposition reaction
      • CaCO₃ → CaO + CO₂ When heated Calcium Carbonate,decomposes into Calcium Oxide and Carbon Dioxide. This process is employed in the manufacturing of quick lime which is an important component in industries.

• Electrolytic decomposition reaction

• • • An electrolytic decomposition reaction is a type of decomposition reaction in which the activation energy for decomposition. Example of electrolytic decomposition reaction
      • Dissociation of water:2H₂O→ 2H₂ + O₂

• Photo decomposition/ photolytic decomposition/ photochemical decomposition

• • A photo decomposition is the type of decomposition reaction in which the reactant is broken down to its constituents by photons.Example of photo decomposition reaction
    • O₃ + hν → O₂ + O(1D)Photolysis occurs in the atmosphere wherein ozone molecules is broken down into oxygen molecule and atomic oxygen.

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