This stack attempts to simulate the traditional chemistry lab, the qualitative analysis of Group I. Group I includes silver, Mercury (+1), and lead ions. Of all common metal ions, only these 3 form a precipitate with chloride ions. Group I is the first set of metal ions removed from a liquid or "unknown" which may contain many metals in solution. By following a "flow chart" or set of logical steps, each of these three ions can be isolated and identified.
The stack is not intended to replace the lab exercise but to allow the student to expand his or her understanding of the flow chart and the logical reasoning behind the isolation and identification of each ion.