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Photochemical Reaction

The reaction ...

Question

The reaction which occurs in the presence of light is known as:

A

endothermic reaction

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B

exothermic reaction

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C

photochemical reaction

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D

synthesis reaction

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Solution

The correct option is C photochemical reaction
For each photon of light absorbed by a chemical system, no more than one molecule is activated for a photochemical reaction, as defined by the quantum yield. When a molecule in the ground state absorbs light, one electron is excited to a higher orbital level. Hence, photochemical reactions are the reactions which occur in the presence of light.

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