Question

Give one example for a reaction using silver salt which is a photo chemicals reactions

Answer 1

: The reactions which take place in presence of sun light are called photo chemical reactions. Generally silver halides especially Silver chloride and silver bromide undergoes decomposition in presence of sunlight to produce silver metal and halogen gas (Chlorine or bromine gas).

The reactions are as follows

2AgCl  (sunlight) → 2Ag + Cl2

2AgBr (sunlight)  → 2Ag + Br2