Consider the following qualitative analysis scenario and then classify what type
ID: 500929 • Letter: C
Question
Consider the following qualitative analysis scenario and then classify what type of qualitative analysis principle is being used.
A precipitate contains AgCl(s) and Hg2Cl2(s). The Ag+ is separated from the Hg2Cl2(s) by adding NH3 to form [Ag(NH3)2]+ (aq).
Options: Selective precipitation, Competitive equilibrium solubilization: cation complexation, Amphoteric Precipitate Solubilization, Selective oxidation/reduction, fractional precipitation, Competitive equilibrium solubilization: anion protonation.
Explanation / Answer
Competitive equilibrium solubilization is used for the separation of AgCl from Hg2Cl2
Because a better equilibrium is established between Ag and ammonia