Explain common ion effect in detail using illustration examples and simple language.
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The common ion effect states that in a chemical solution, if the concentration of any one of the ions is increased, then, according to Le Chatelier's principle, some of the ions in excess should be removed from solution, by combining with the oppositely charged ions. Some of the salt will be precipitated until the ion product is equal to the solubility product. In short, the common ion effect is the suppression of the degree of dissociation of a weak electrolyte containing a common ion.
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To the solution of weak electrolyte a salt solution having common ion is added then the dissociation of weak electrolyte is suppressed. This effect is known as
For Example :
In presence of
Explanation :
Due to presence of common ion i.e.,
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