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Common Ion effect can be used in which of the following cases?

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in Chemistry – Class 11 by (148k points)
Common Ion effect can be used in which of the following cases?

(a) cloth making

(b) alcohol purification

(c) quantitative analysis

(d) qualitative analysis

The question was posed to me in an interview.

This is a very interesting question from Solubility Equilibria of Sparingly Soluble Salts in chapter Equilibrium of Chemistry – Class 11

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Best answer
Right answer is (d) qualitative analysis

Easy explanation: 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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