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Topic plan · A-Level Chemistry 9701 · Topic 7

Equilibria

Dynamic equilibrium, Le Chatelier's principle, Kc and Kp, and the Brønsted–Lowry picture of acids and bases.

Open the topic lab Question bank Notes PDF
Unit at a glance

5 lessons, 225 minutes of teaching

Lessons
5, each planned for 45 minutes
Worksheets
5 with answer keys
Quiz questions
40 multiple-choice, assignable in the app
Lab
Equilibria lab
Scheme of work

The lessons in order

RefLesson packStructureWorksheetQuizLab tab
7.1Dynamic equilibrium and Le Chatelier's principle
In a sealed flask a reversible reaction settles to a point where nothing seems to change, yet molecules are still reacting in both directions.
Corners6 Q, 13 marks8 MCQtab 1, tab 2
7.1The equilibrium constant Kc
Le Chatelier tells you which way an equilibrium moves.
Rally Coach6 Q, 15 marks8 MCQtab 3
7.1The equilibrium constant Kp
For reactions between gases it is easier to measure pressures than concentrations.
Connect-Extend-Challenge6 Q, 14 marks8 MCQtab 4
7.2Brønsted–Lowry acids and bases
An acid is not defined by tasting sour or turning litmus red.
Anticipation / Reaction Guide6 Q, 13 marks8 MCQtab 5
7.2pH, strong and weak acids, titration curves
Add alkali to acid one drop at a time and the pH hardly moves, then leaps by several units in a fraction of a cubic centimetre.
Cooperative Concept Mapping6 Q, 13 marks8 MCQtab 6

Each pack holds the plan, worksheet and quiz for its lesson. Teach the rows in order; the lab tabs match the student lessons.

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