How do buffers work, paper 1 - AQA A level Chemistry

In this episode I explain how buffers work to maintain a constant pH. We look at acidic buffers and basic buffers and how the react to the addition of a small amount of acid or base. This is topic 1.12 Acids and Bases of the AQA A Level Chemistry Specification. Video chapters shown below...

0:00 Introduction
0:28 What is a Buffer?
1:09 Acidic Buffers
2:48 Basic Buffers
4:24 Summary