Why is Barium Chloride Preferred Over Lead Chloride for Sulfate Precipitation?

In summary, simple precipitation is the formation of a solid substance from a liquid solution due to changes in concentration or temperature. It differs from other types of precipitation, such as rain or hail, and has various practical applications including water purification and mineral extraction. It is also an important process in the natural water cycle.
  • #1
Stroodle
26
0
Hi there.

I'm just wanting to know the most important reason why barium chloride is chosen over lead chloride as the precipitation agent when trying to determine, by gravimetric analysis, how much sulfate is in a sample.

I think it's probably due to BaCl2 having a higher solubility, but I just want to confirm.
In the experiment the BaCl2 (or PbCl2) is added to a heated solution containing the sulfate ions.

Thanks!
 
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  • #2
What about the solubilities of PbSO4 and BaSO4?
 

FAQ: Why is Barium Chloride Preferred Over Lead Chloride for Sulfate Precipitation?

1. What is simple precipitation?

Simple precipitation is a process in which a solid substance, known as a precipitate, forms from a liquid solution. This can occur when the solubility of a substance decreases and it becomes insoluble in the solution.

2. What causes simple precipitation?

Simple precipitation is caused by a change in the solution's concentration or temperature, which affects the solubility of the substance. When the solubility decreases, the substance can no longer remain dissolved in the solution and forms a solid precipitate.

3. What are some examples of simple precipitation?

Some common examples of simple precipitation include the formation of salt crystals when seawater evaporates, the formation of snowflakes from water vapor in the atmosphere, and the formation of rust when iron reacts with oxygen in the presence of water.

4. How is simple precipitation different from other types of precipitation?

Simple precipitation differs from other types of precipitation, such as rain or hail, in that it involves the formation of a solid substance from a liquid solution. Other types of precipitation involve the release of water in various forms from the atmosphere, rather than the formation of a solid substance.

5. What are the practical applications of simple precipitation?

Simple precipitation has many practical applications, including the purification of water through the removal of impurities, the extraction of minerals from ores, and the production of pharmaceuticals and other chemicals. It is also an important process in the natural water cycle, where it helps to regulate the concentration of substances in bodies of water.

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