AP Chemistryeasymcq1 pt
Which combination forms a buffer solution?
A.CH₃COOH and NaCH₃COO
B.HCl and NaCl
C.NaOH and NaCl
D.CH₃COOH alone
Explanation
Core Concept
A weak acid plus its conjugate base (acetate) makes a buffer. Both partners must be present in comparable amounts.
Correct Answer
ACH₃COOH and NaCH₃COO
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