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InterviewSolution
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Define salt hydrolysis. Explain the nature of aqueous solution of `CuSO_(4)`, on the basis of the above phenomenon |
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Answer» The phenomenon in which a salt on dissolution in water forms a parent acid and a parent alkali resulting in acidic, basic or neutral solution is called salt hydrolysis. It is the most important property of salts. `CuSO_(4)` on hydrolysis produces a strong acid that ionises and a weak base that does not ionsie. This increases the concentration of `H^(+)` ions making the solution acidic with `pH lt 7` ( at `25^(@)C`) `Cu^(+2) + SO_(4)^(-1) + 2H_(2)O rarr Cu(OH)_(2) + 2H^(+) + SO_(4)^(-2)` As cation of the salt reacts with water, it is called cationic hydrolysis |
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