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Question


Define photochemical reaction and electrochemical reaction with an example.


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Solution

Photochemical reaction: It is a reaction which occurs with absorption of light energy.

For example: Photosynthesis
6CO2 + 6H2O C6H12O6+ 6O2

Electrochemical reaction: It is a reaction which occurs with absorption of electrical energy.

For example: Electrolysis of water
2H2O 2H2 + 2O2


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