Consider the following acids and bases:
HCO2H | Ka = 1.8 × 10−4 |
HOBr | Ka = 2.0 × 10−9 |
(C2H5)2NH | Kb = 1.3 × 10−3 |
HONH2 | Kb = 1.1 × 10−8 |
Choose substances from the following list that would be the best choice to prepare a pH = 9.0 buffer solution.
a. HCO2H
b. HOBr
c. KHCO2
d. HONH3NO3
e. (C2H5)2NH
f. (C2H5)2NH2Cl
g. HONH2
h. NaOBr
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