Ka = 1.8 × 10-5 for the ionization of HC2H3O2(aq) .Determine the [HC2H3O2]/[C2H3O2-] ratio that will produce a buffer at pH = 5.00.
A) 3.6 × 10-6
B) 9.0 × 10-5
C) 0.18
D) 0.56
E) 1.8
Correct Answer:
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