Common Ion effect can be used in which of the following cases?a)cloth ...
Common Ion effect is used in the purification of common salt, salting out of soap and qualitative analysis. In qualitative analysis, Ammonium Hydroxide is added in the presence of Ammonium Chloride to avoid the precipitation of V group radicals.
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Common Ion effect can be used in which of the following cases?a)cloth ...
Qualitative Analysis
The common ion effect can be used in qualitative analysis to help identify the presence of certain ions in a solution. This effect is based on the principle that the solubility of a compound is reduced when a common ion is added to the solution.
How it works
When a common ion is added to a solution that contains a sparingly soluble salt, the equilibrium shifts toward the formation of solid precipitate. This results in the precipitation of the less soluble compound, which can be used to identify the presence of a specific ion in the solution.
Example
For example, if you suspect the presence of chloride ions in a solution, you can add a solution of silver nitrate (AgNO3), which contains the common ion Ag+. If a white precipitate forms, it indicates the presence of chloride ions in the solution, as silver chloride (AgCl) is a sparingly soluble salt.
Application in Qualitative Analysis
The common ion effect is commonly used in qualitative analysis to identify the presence of various ions in a solution. By understanding the solubility behavior of different compounds in the presence of common ions, chemists can determine the composition of unknown solutions.
Conclusion
In conclusion, the common ion effect is a valuable tool in qualitative analysis, allowing chemists to identify the presence of specific ions in a solution based on their solubility behavior. By utilizing this effect, researchers can gain valuable insights into the composition of various chemical samples.