Question

Which reactions are used in black and white photography ? What is the type of these reactions?

Answer 1

silver bromide(AgCl) and silver cloride(AgBr) reaction are use in black and white photography.

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Answer 2

Heya!

Here is your answer!
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It is called  photolysis of silver chloride and silver bromide.

Silver chloride and siver bromide are the 2 salts. When silver chloride is exposed to sunlight it forms silver and chlorine gas.it is used in black and white photography as the parts which reflect most of the light appears black and part that doesn't reflect much light will appear white. It is a decomposition reaction.
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