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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.
pH Curves Strong Acid – Weak Base
This video explains how to draw a strong acid-weak base pH curve.
pH Curves Weak Acid – Strong Base
This video explains how to draw a weak acid- strong base pH curve.
pH Curves Weak Acid – Weak Base
This video explains how to draw a weak acid- strong base pH curve.
Choosing the Right Indicator
This video highlights the importance of choosing the right indicator.
All the K’s
This video summarises all the different constants you need to know and when to use them.
