Name the salts that are used in black and white photography. Give reactions when they are exposed to light. Define the type of chemical reaction taking place.

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1 Answers

Silver chloride (Agcl) and Silver bromide (AgBr)

2AgCl+ Sunlight →  2Ag+Cl2

2AgBr +Sunlight → 2Ag+Br2 

Those reactions in which energy is absorbed (in form of heat, light or electricity) to break down the reactants is called decomposition reaction. 

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