Last updated on Oct 23, 2026

Le Chatelier's Principle (AQA A-Level Chemistry): Quizzes

Le Chatelier's Principle

Practise the questions

10 questions from this quiz

Equilibrium shifts to oppose the change

Equilibrium shifts right

Toward side with more gas molecules

Shifts to reverse (endothermic) direction

Shifts right, more $SO_3$

Equilibrium shifts right

It does not affect the position

Phosphoric acid

Blue to green

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Le Chatelier's Principle (AQA A-Level Chemistry): Quizzes

Practise the questions

What does Le Chatelier's principle state about a system at equilibrium?

For 2SO2(g)+O2(g)⇌2SO3(g)2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)2SO2​(g)+O2​(g)⇌2SO3​(g), what happens if pressure is increased?

When pressure decreases in a gaseous equilibrium, which way does the equilibrium shift?

For an exothermic forward reaction, what happens when temperature is increased?

For 2SO2(g)+O2(g)⇌2SO3(g)2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)2SO2​(g)+O2​(g)⇌2SO3​(g), ΔH=−197 kJ/mol\Delta H = -197\, kJ/molΔH=−197kJ/mol, what happens when temperature decreases?

What happens when the concentration of reactants is increased in an equilibrium system?

How does a catalyst affect the position of equilibrium?

In ethanol production from ethene, what catalyst is used?

What compromise temperature is used in ethanol production to balance yield and rate?

For [Cu(H2O)6]2+(aq)+4Cl−(aq)⇌[CuCl4]2−(aq)+6H2O(l)[Cu(H_2O)_6]^{2+}(aq) + 4Cl^-(aq) \rightleftharpoons [CuCl_4]^{2-}(aq) + 6H_2O(l)[Cu(H2​O)6​]2+(aq)+4Cl−(aq)⇌[CuCl4​]2−(aq)+6H2​O(l), what colour change occurs when conc. HCl is added?

Explore AQA A-Level Chemistry Revision Notes by Topics

Atomic Structure

Formulae, Equations & Calculations

The Mole, Avogadro & The Ideal Gas Equation

Types of Bonding & Properties

Molecules: Shapes & Forces

Energetics

Kinetics

Chemical Equilibria, Le Chatelier's Principle & Kc

Oxidation, Reduction & Redox Equations

Oxidation, Reduction & Redox Equations

Explore AQA A-Level Chemistry Model Answers by Topics

Atomic Structure

Formulae, Equations & Calculations

The Mole, Avogadro & The Ideal Gas Equation

Types of Bonding & Properties

Molecules: Shapes & Forces

Energetics

Kinetics

Chemical Equilibria, Le Chatelier's Principle & Kc

Oxidation, Reduction & Redox Equations

Oxidation, Reduction & Redox Equations

Explore AQA A-Level Chemistry Flashcards by Topics

Atomic Structure

Formulae, Equations & Calculations

The Mole, Avogadro & The Ideal Gas Equation

Types of Bonding & Properties

Molecules: Shapes & Forces

Energetics

Kinetics

Chemical Equilibria, Le Chatelier's Principle & Kc

Oxidation, Reduction & Redox Equations

Oxidation, Reduction & Redox Equations

Explore AQA A-Level Chemistry Exam Questions by Topics

Atomic Structure

Formulae, Equations & Calculations

The Mole, Avogadro & The Ideal Gas Equation

Types of Bonding & Properties

Molecules: Shapes & Forces

Energetics

Kinetics

Chemical Equilibria, Le Chatelier's Principle & Kc

Oxidation, Reduction & Redox Equations

Oxidation, Reduction & Redox Equations

Join 100,000+ A-Level students studying Quizzes with us.

For $2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)$ , what happens if pressure is increased?

For $2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)$ , $\Delta H = -197\, kJ/mol$ , what happens when temperature decreases?

For $[Cu(H_2O)_6]^{2+}(aq) + 4Cl^-(aq) \rightleftharpoons [CuCl_4]^{2-}(aq) + 6H_2O(l)$ , what colour change occurs when conc. HCl is added?