Dec 31, 2015
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I got the answer right but I used the acid base method. Since NH3 is a base I figured something acidic would be most soluble and since Ag is acidic and Br is neutral I chose that as an answer. However, the back of the book states t metals have a tendency to form complex ions hence it is C. Did I do it right?
 

Don Kim

5+ Year Member
May 11, 2014
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Pre-Dental
Hm, maybe but maybe not. First of all, Ag is not interacting with NH3 in the beginning it is interacting with water. So I don't think your first logic works here. This problem has to do with the dynamics of solvents and solutes, not much about acid/bases. When the solvent is predominantly water, naturally the solutes will interact with that more frequently. When NH3 became a lot more concentrated, the solute interacted with the new dominant solute, NH3, and since the solute is Ag, a transition metal, it will tend to form complex ions when the concentration is right.