Buffer Solutions (OCR)

3 Full Lesson Bundle (including a FREE revision lesson!) on Buffer Solutions. This bundle covers the OCR A Level Chemistry specification. Please review the learning objectives below.

**Part 1: Explaining How Buffer Solutions Work

1. To know a buffer solution is a system that minimises pH changes on addition of small amounts of an acid or base
2. To describe how a buffer solution is formed using weak acids, salts and strong alkalis
3. To explain the role of the conjugate acid-base pair in an acid buffer solution such as how the blood pH is controlled by the carbonic acid–hydrogencarbonate buffer system

**Part 2: Buffer Solution Calculations (Part 1)

1. To calculate the pH of a buffer solution containing a weak acid and the salt of a weak acid by using the Ka expression and pH equation
2. To calculate equilibrium concentrations, moles or mass of the components of a weak acid-salt of a weak acid buffer solution

**Part 3: Buffer Solution Calculations (Part 2)

1. To calculate the pH of a weak acid-strong alkali buffer solution
2. To calculate equilibrium concentrations, moles or mass of the components of a weak acid- strong alkali buffer solution

Part 4: BONUS Revision Lesson

1. To review how to calculate the pH of a buffer solution containing a weak acid and a strong alkali
2. To review how to calculate the pH of a buffer solution containing a weak acid and the salt of the weak acid

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