Which of the following salts solution will act as a buffer ?

1.	Which of the following salts solution will act as a buffer ?
Answer» `NH_(4)CH_(3)COO(aq.)` `NH_(4)CI(aq.)` `NaCH_(3)COO(aq.)` `NaCI(aq.)` Solution :It acts as a buffer because its cation `(NH_(4)^(+))` REACTS with `OH^(-)` from added base to form a weak base `(NH_(3)) :NH_(4)^(+)+OH^(-)rarr NH_(3)+H_(2)O` Its NEGATIVE ion `(CH_(3)COO^(-))` reacts with `H^(+)` from added acid to from a weak acid `(CH_(3)COOH) :CH_(3)COO^(-)+H^(+)rarr CH_(3)COOH`

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