Which pair of substances could form a buffered aqueous solution? A)HCl,NaCl B)HNO₃,NaNO₃ C)H₃PO₄,Na H₂PO₄ D)HSO₄,CH₃COOH E)NH₃,NaOH

Name: Which pair of substances could form a buffered aqueous solution? A)HCl,NaCl B)HNO 3 ,NaNO 3 C)H 3 PO 4 ,Na H 2 PO 4 D)H SO 4 ,CH 3 COOH E)NH 3 ,NaOH
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Question

Quizplus · Accepted Answer

A buffered solution requires both a weak acid and its conjugate base or a weak base and its conjugate acid. Choice C contains both H₃PO4^-3 and its conjugate base NaH₂PO4^-2.

Which Pair of Substances Could Form a Buffered Aqueous Solution