Which one of the following pairs of solution is not an acidic buffer ?

1.	Which one of the following pairs of solution is not an acidic buffer ?
Answer» `H_2CO_3` and `Na_2CO_3` `H_3PO_4` and `Na_3PO_4` `HClO_4` and `NaClO_4` `CH_3COOH` and `CH_3COONa` SOLUTION :`HClO_4` and `NaClO_4` cannot ACT as an ACIDIC BUFFER.

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