What is the difference between pKa and pH?

By Forinfos - 10/05/2025 - 0 comments

In chemistry, the main difference between pH and pKa is that pH tells the level of hydrogen ions in a certain medium while pKa value indicates the degree at which an acid dissociates or the side at which equilibrium is favored, according to Tutor Vista.

Additionally, pKa is usually the logarithm of Ka value while pH is the inverse of H+ concentration logarithm. While there is a difference between pKa and pH, the two items are related. According to Tutor Vista, determine the pH and pKa relationship by using the Henderson-Hasselbach equation shown below:

pH = pKa + log $frac{[A^-]}{[HA]}$

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