Question

silver chloride turns grey when kept in sunlight .give reason.

Answer 1

Silver chloride turns grey when kept in sunlight.

Explanation:
Silver chloride which is white colour turns to grey colour silver due to decomposition reaction which occur in presence of sunlight. Such reactions are called as Photo chemical reactions.
Here chlorine gas will escape.

Silver chloride (s)---> Silver(s) + Chlorine.(g)
 
           Sunlight 
2AgCl(s)-------------> 2Ag(s)+Cl2(g)
 white                       Grey 

Answer 2

Answer:

Silver chloride turns grey when kept in sunlight. This is because a photolytic decomposition reaction takes place where the white silver chloride decomposes in the presence of sunlight to form white silver and chlorine gas which escapes.

Silver chloride(s) → Silver(s) + Chlorine(g)