Acids, Bases and Buffers Videos

Final exams on the horizon? Kick-start your revision with our 4-day Chemistry A Level Easter revision courses for AQA, Edexcel and OCR (A). Book now for online or face-to-face in London.

Struggling with Chemistry? Find a one-to-one tutor on our new Tuition Platform.

The videos below are from the YouTube channels MaChemGuy and Mr C Dunkley. Subscribe to keep up to date with the latest videos.

Contents

1 Overview: Acids, Bases and Buffers
2 Acids and Bases Introduction
3 The Acid Dissociation Constant Ka
4 Calculating the pH of Strong Acids
5 Calculating the pH of Weak Acids
6 Weak Acid Approximations
7 The Ionic Product of Water Kw
8 Calculating the pH of Strong Bases
9 Introduction to Buffer Solutions
10 Buffer Calculations 1
11 Buffer Calculations 2
12 pH Curves Strong Acid – Strong Base
13 pH Curves Strong Acid – Weak Base
14 pH Curves Weak Acid – Strong Base
15 pH Curves Weak Acid – Weak Base
16 Choosing the Right Indicator
17 All the K’s

Overview: Acids, Bases and Buffers

This is an overview of Topic 23: Acids, Bases and Buffers. It includes Brønsted–Lowry definitions of acids and bases, conjugate acid-base pairs, pH calculations, Ka and Kw calculations and how a buffer works and calculations.

Acids and Bases Introduction

Video explaining the Brønsted – Lowry definition of acids and bases, strong and weak acids and bases and conjugate acid-base pairs.

The Acid Dissociation Constant Ka

This video introduces the acid dissociation constant and provides worked examples.

Calculating the pH of Strong Acids

This video demonstrates how to calculate the pH of strong acids using examples.

Calculating the pH of Weak Acids

This video demonstrates how to calculate the pH of weak acids using examples.

Weak Acid Approximations

This video explains the reasoning behind the assumptions used in weak acid calculations.

The Ionic Product of Water Kw

This video explains how the Kw constant is derived and how its used in pH calculations for strong bases.

Calculating the pH of Strong Bases

This video uses many examples to demonstrate how to calculate the pH of strong bases.

Introduction to Buffer Solutions

Video explaining what buffer solutions are, how they are made and how they work.

Buffer Calculations 1

This video looks at how the constant used to calculate the pH of a buffer solution is derived and includes 3 typical exam style buffer calculations.

Buffer Calculations 2

This video looks at the Henderson-Hasselbalch expression and uses that expression explain the limits for buffer action.

pH Curves Strong Acid – Strong Base

This video demonstrates a titration to show the effect of adding strong base to strong acid via the colour changes of the indicator. These results are then used to draw a pH curve.