Which of the following pairs of substances would make a good buffer solution?
A.
HC2H3O2(aq) and NaC2H3O2(aq)
B.
H2SO4(aq) and LiOH(aq)
C.
HCl(aq) and KCl(aq)
D.
HF(aq) and NH3(aq)
Exam No：AP Chemistry Problem Set 3 Year：2024 Question No：APChemistry2024AP0103
Answer:
A
Knowledge points:
8.1 Introduction to Acids and Bases
8.10 Buffer Capacity
8.11 pH and Solubility
8.2 pH and pOH of Strong Acids and Bases
8.3 Weak Acid and Base Equilibria
8.4 Acid-Base Reactions and Buffers
8.5 Acid-Base Titrations
8.6 Molecular Structure of Acids and Bases
8.7 pH and pK
8.8 Properties of Buffers
8.9 Henderson-Hasselbalch Equation
Solution:
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