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What are everyday applications for the chloride solubility rule?
- I am doing experiment about precipitation and separation of group I ions. The chlorides of Pb2+ and Ag+ are all insoluble in cold water, they can be removed as a group from solution by adding HCl. The equations are:
(aq) + Cl-
(aq) + 2Cl-
My question is how this experiment relates to daily life experience?
Maybe these aren't daily experiences, but:
- Chloride is regularly monitored in municipal water supplies- especially in coastal areas. High chloride levels lead to salt poisoning (which was a principal cause of death in early America- it contributed to the failure of the Jamestown colony! [Earle].
The precipitation reaction with silver is the basis for several classical chemical analyses used to monitor chloride levels, and is also a quick spot test for chlorides (try adding a couple of drops of silver nitrate to your tap water!)
- Silver is very expensive and is recycled whenever possible. The silver chloride precipitation reaction allows silver to be separated from photographic and plating solutions and reclaimed.
- If adding salt to a water sample causes it to cloud, it is probably heavily contaminated with silver, mercury, or lead.
- The lead reaction has some implications for soldering; clean a high-chloride flux off your circuit board or the HCl will react slowly with the solder, producing lead(II) chloride.
- You have some insight now into how minerals like horn silver and cotunnite form and wether.
- C. V. Earle, Environment, Disease, and Mortality in Early Virginia, in The Chesapeake in the Seventeenth Century: Essays on Anglo-American Society, eds. T. W. Tate, D. L. Ammerman, W. W. Norton, New York (1979).
Author: Fred Senese email@example.com