Why does a photographic film get spoilt if exposed to sunlight? Give an equation in support of your answer.

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Solution

The photographic film involves the use of silver salts that decompose in the presence of sunlight and the film get spoilt.
Silver salts undergoes photolytic decomposition when exposed to sunlight.
Example : Silver chloride decompose in the presence of sunlight to form silver and chlorine gas.
$2 AgCl (s) \overset{Sunlight}{\to} 2 Ag (s) + {Cl}_{2} (g)$

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