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Which of the following solutions will resist change in their pH on moderate dilution?A. A solution which is 0.1 M in `PhNH_(2)` and 0.2 M in `PhNH_(3)^(+)Cl^(-)`B. 0.1 M `NaHCO_(3)`C. A solution obtained by mixing equal volumes of 0.1 M NaOH and 0.2 M PhOH.D. 0.4 M `CH_(3)COONH_(4)` |
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Answer» Correct Answer - A::B::C::D Buffer solution, solutions of amphi-protic species and solutions of salts of weak acid `+` weak base resist change in their pH on dilution. A is buffer B is amphiprotic species. C is buffer solution of phenol and phenoxide. D is salt of weak acid `+` weak base. |
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