Using the given information, choose the best answer for preparing a buffer with a pH of 8 .
A.
\(\mathrm{K}_{2} \mathrm{HPO}_{4}+\mathrm{KH}_{2} \mathrm{PO}_{4}\)
B.
\(\mathrm{H}_{3} \mathrm{PO}_{4}\)
C.
\(\mathrm{K}_{2} \mathrm{HPO}_{4}+\mathrm{K}_{3} \mathrm{PO}_{4}\)
D.
\(\mathrm{K}_{3} \mathrm{PO}_{4}\)
Exam No：AP Chemistry Practice Test Year：2024 Question No：2
Answer:
A
Knowledge points:
8.4 Acid-Base Reactions and Buffers
Solution:
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