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(i) State Le-Chatelier’s principle, (ii) What is common ion effect. Give an example. |
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Answer» (i) Definition: “when a constraint applied to a system at equilibrium in a reversible reaction, the equilibrium shifts so as to nullify the constraint”. [Constraint is change in temperature or pressure, addition of reactant or product] (ii) Supression in degree of dissociation of a weak electrolyte by addition of a common ion is called common ion effect. Example: CH3COOH and CH3COONa |
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