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Ka, Kb, pKa, and pKb
Worksheet
Grade Level
Chemistry
11.104 Ka, Kb, pKa, and pKb
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At equilibrium for HA, [H3O+] = 3.0 x 10^-4 M, [A-] = 1.5 x 10^-3 M, and [HA] = 0.050 M. Which Ka and pKa pair is closest?
A
Ka = 4.5 x 10^-7 and pKa = 6.35
B
Ka = 2.8 x 10^-3 and pKa = 2.55
C
Ka = 9.0 x 10^-6 and pKa = 5.05
D
Ka = 1.1 x 10
5
and pKa = -5.05
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