Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
An optimal buffer is a solution that resists changes in pH when small amounts of an acid or a base are added to it. It's most effective when the pH is close to the pKa value of the buffering agent.
This refers to the amount of acid or base that can be added to a buffer without causing a significant change in pH. It's like how many villains our superhero can handle before things start going haywire.
pKa Value: The pKa value is the logarithmic acid dissociation constant. It tells us about the strength of an acid. In our analogy, this would be like knowing how strong our superhero needs to be for specific villains.