Buffers Complete Study Guide

A buffer is a solution that consists of a weak acid and its conjugate base (or a weak base and its conjugate acid). For example: NH₃/NH₄⁺. A buffer resists changes in pH because when a strong acid is added, the weak base reacts with it, neutralizing it and minimizing the change in pH. When a strong base is added, the weak acid reacts with it, neutralizing it and minimizing the change in pH.

Let's look at the study guide below to learn how to calculate pH of a buffer.

Buffers Study Guide (calculating pH)

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