In the experiment 1, silver nitrate solution was taken and added with sodium chloride solution acidified by nitric acid, and white precipitate was produced at this time, which proved that silver chloride was generated. Then adding ammonia water for precipitation and dissolution. Then, potassium bromide was added to produce a yellowish precipitate, indicating that KS (AgCl) >: Ks(AgBr). Then, 1M sodium thiosulfate was added to precipitate and dissolve, indicating that K was stable {[Ag (S2O3) 2] 3-} >: K was stable {[Ag(NH3)2]+}.

Then add potassium iodide to generate yellow precipitate, indicating that KS (AgBR) >: Ks(AgI). Then add saturated sodium thiosulfate to dissolve the precipitate, and add sodium sulfide to generate precipitate, indicating that KS (AGI) >: Ks(Ag2S).