Question

An aqueous solution of metal nitrate P reacts with sodium bromide solution to form yellow precipitate of compound Q which is used in photography.Q on exposure to sunlight undergoes decomposition reaction to form metal present in P along with reddish brown gas.Identify P and Q.Write the chemical reaction and type of chemical reaction.

Answer 1

The aqueous solu. of metal nitrate P is Silver(Ag) and the compoud O is AgBr which is the yellow precipitate. Chemical reaction:- NaBr+AgNo3 = AgBr(yellow precipitate) + NaNo3 double displacement reaction.