When sodium chloride, NaCl, is added to a solution of silver nitrate, AgNO 3 , a

Question

When sodium chloride, NaCl, is added to a solution of silver nitrate, AgNO3, a white precipitate of silver chloride, AgCl, forms. If concentrated ammonia, NH3, is added to this precipitate, a clear colorless solution forms containing diamminesilver(I) ions, [Ag(NH3)2]+. Potassium iodide, KBr, solution added to this colorless solution will cause pale yellow silver bromide, AgBr, to precipitate. List the species, Cl-, NH3, or Br- in order of decreasing stability of the compounds or complexes that they can form with silver and explain your reasons.

Explanation / Answer

I think the order is

AgCl > AgBr > [Ag(NH3)2]+

Reason: comparing their formatio constants, and also AgBr and AgCl are salts, so they are more stabe that charged ionic coordibation compounds. also comparing AgCl and AgBr, AgCl is more stable as Ag and Cl has comaparble sizes to make a stable compound than Ag and Br where Br is greater and a less stable bond is formed.

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