If the bicarbonate to carbonic acid ratio is 15 and the log 15 equals 1.176), what would the pH equal?

Question

Quizplus · Accepted Answer

The pH can be calculated using the Henderson-Hasselbalch equation: pH = pKa + log([A-]/[HA]), where [A-] is the concentration of bicarbonate and [HA] is the concentration of carbonic acid. Given that the pKa of carbonic acid is approximately 6.1 and the log of the ratio ([A-]/[HA] = 15) is 1.176, the pH = 6.1 + 1.176 = 7.276, which rounds to 7.28, making option C correct.

If the Bicarbonate to Carbonic Acid Ratio Is 15 and the Log