Which statements about acid-base equilibria are true?
I. The pKa is the negative log10 of the acid equilibrium constant.
II. A stronger acid has a pKa with a smaller value than a weaker acid.
III. The stronger the base, the smaller the pKa of its conjugate acid.
IV. The Ka = K [HA].
A) I, III
B) I, II
C) I, II, III
D) II, III, IV
Correct Answer:
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