What chemical reactions take in photography?

Answer 1

2AgCl ----> 2Ag + Cl2

Answer 2

1.aluminium hydroxide

2.silver bromide

3.potassium nitrate

4.sodium chloride

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I'm no chemist, so I cannot disagree with the above list no matter that it all looks foreign to me. Assuming you wish to know the chemicals used and not a list of chemical compounds, they are, without too much elaboration:

Developer- usuall Metol or Phenidone mixed with Hydroquinone and a pH modifier

Stop bath- traditionally, 15% glacial acetic acid diluted with water. Indicator stop contains a dye to signal when the solution is chemically exhausted.

Fixer - traditionally sodium (or ammonium) thiosulfate.

Answer 3

developer.