Unit at a glance
4 lessons, 180 minutes of teaching
Scheme of work
The lessons in order
| Ref | Lesson pack | Structure | Worksheet | Quiz | Lab tab |
|---|---|---|---|---|---|
| 25.1 | Ka, pKa and the pH of weak acids Water itself ionises a tiny amount, and that fixes the link between [H + ] and [OH − ]. | Round Table | 6 Q, 15 marks | 8 MCQ | tab 1, tab 2 |
| 25.1 | Buffer solutions A buffer keeps its pH almost constant when small amounts of acid or alkali are added. | Rally Coach | 6 Q, 15 marks | 8 MCQ | tab 3, tab 4 |
| 25.1 | Solubility product and the common ion effect Even 'insoluble' salts dissolve a tiny amount, and the saturated solution is an equilibrium. | Numbered Heads Together | 6 Q, 15 marks | 8 MCQ | tab 5 |
| 25.2 | Partition coefficients Shake a solute with two immiscible solvents and it shares itself between them in a fixed ratio. | Round Table | 6 Q, 14 marks | 8 MCQ | tab 6 |
Each pack holds the plan, worksheet and quiz for its lesson. Teach the rows in order; the lab tabs match the student lessons.
Also for this topic
Topic resources
Topic labAcid-base equilibria lab
Question bank32 questions across the topic
Revision notesOne page per lesson
Notes PDFPrintable topic notes
Student syllabus pageEquilibria
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