Question

name two salt that are used for black and white photographs.give reaction when they are exposed to sunlight

Answer 1

silver chloride (agcl) and silver bromide (agbr)

Answer 2

Silver Chloride and Silver Bromide are the two salts. When silver chloride is exposed to sunlight it forms silver and chlorine gas. It is used in black and white photography as the part 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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