Question

Name two salts which are used in black and white photography. give equations for the reactions when they are exposed to sunlight.

Answer 1

AgCl and AgBr are the 2 salts used.

Answer 2

1) Silver bromide and silver metal are used in black and white photography

2) and the type of reaction is photochemical decomposition reaction

3) if it is exposed to sunlight it turns Grey

2agbr -----> 2ag + br

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