Which statements regarding the Henderson-Hasselbalch equation are true?
1) If the pH of the solution is known as is the pKa for the acid, the ratio of conjugate base to acid can be determined. 2) At pH = pKa for an acid, there is an equal amount of conjugate base to acid in solution. 3) At pH >> pKa for an acid, the acid will be mostly ionized. 4) At pH << pKa for an acid, the acid will be mostly ionized. A) 1, 2, and 3 are true. B) 2, 3, and 4 are true. C) 1, 2, and 4 are true. D) All of the listed statements are true.
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