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Le Châtelier’s Principle (VCE SSCE Chemistry): Quizzes

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Le Châtelier's Principle

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What does Le Chatelier's principle state about equilibrium systems experiencing a change?

System adjusts to partially oppose change

Which factor is the ONLY one that changes the value of the equilibrium constant $K$ ?

Temperature

For $\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g)$ , what happens when extra $\text{N}_2$ is added?

Equilibrium shifts right, more $\text{NH}_3$

For $2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g)$ , what happens when pressure increases?

Shifts toward $\text{SO}_3$ (fewer particles)

What effect does adding an inert gas (e.g., helium) have on an equilibrium system at constant volume?

No effect on equilibrium position or $K$

For $\text{Fe}^{3+}(aq) + \text{SCN}^-(aq) \rightleftharpoons \text{FeSCN}^{2+}(aq)$ , what happens with dilution?

Shifts left toward 2 particles

For exothermic reaction $2\text{NO}_2(g) \rightleftharpoons \text{N}_2\text{O}_4(g) + \text{energy}$ , what happens at higher T?

Shifts left, $K$ decreases, more $\text{NO}_2$

What effect does a catalyst have on the position of equilibrium and the value of $K$ ?

No change to position or $K$

When reaction quotient $Q < K$ , what occurs in the equilibrium system?

Net forward reaction

What is the proper pH range for swimming pool water to maintain effective $\text{HOCl}$ levels?

7.2 to 7.8

Explore VCE SSCE Chemistry Revision Notes by Topics

Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

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Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

Explore VCE SSCE Chemistry Flashcards by Topics

Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

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Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

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Le Châtelier’s Principle (VCE SSCE Chemistry): Quizzes

Practise the questions

What does Le Chatelier's principle state about equilibrium systems experiencing a change?

Which factor is the ONLY one that changes the value of the equilibrium constant KKK?

For N2(g)+3H2(g)⇌2NH3(g)\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g)N2​(g)+3H2​(g)⇌2NH3​(g), what happens when extra N2\text{N}_2N2​ is added?

For 2SO2(g)+O2(g)⇌2SO3(g)2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g)2SO2​(g)+O2​(g)⇌2SO3​(g), what happens when pressure increases?

What effect does adding an inert gas (e.g., helium) have on an equilibrium system at constant volume?

For Fe3+(aq)+SCN−(aq)⇌FeSCN2+(aq)\text{Fe}^{3+}(aq) + \text{SCN}^-(aq) \rightleftharpoons \text{FeSCN}^{2+}(aq)Fe3+(aq)+SCN−(aq)⇌FeSCN2+(aq), what happens with dilution?

For exothermic reaction 2NO2(g)⇌N2O4(g)+energy2\text{NO}_2(g) \rightleftharpoons \text{N}_2\text{O}_4(g) + \text{energy}2NO2​(g)⇌N2​O4​(g)+energy, what happens at higher T?

What effect does a catalyst have on the position of equilibrium and the value of KKK?

When reaction quotient Q<KQ < KQ<K, what occurs in the equilibrium system?

What is the proper pH range for swimming pool water to maintain effective HOCl\text{HOCl}HOCl levels?

Explore VCE SSCE Chemistry Revision Notes by Topics

Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

Explore VCE SSCE Chemistry Model Answers by Topics

Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

Explore VCE SSCE Chemistry Flashcards by Topics

Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

Explore VCE SSCE Chemistry Exam Questions by Topics

Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

Join 100,000+ SSCE students studying Quizzes with us.

Which factor is the ONLY one that changes the value of the equilibrium constant $K$ ?

For $\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g)$ , what happens when extra $\text{N}_2$ is added?

For $2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g)$ , what happens when pressure increases?

For $\text{Fe}^{3+}(aq) + \text{SCN}^-(aq) \rightleftharpoons \text{FeSCN}^{2+}(aq)$ , what happens with dilution?

For exothermic reaction $2\text{NO}_2(g) \rightleftharpoons \text{N}_2\text{O}_4(g) + \text{energy}$ , what happens at higher T?

What effect does a catalyst have on the position of equilibrium and the value of $K$ ?

When reaction quotient $Q < K$ , what occurs in the equilibrium system?

What is the proper pH range for swimming pool water to maintain effective $\text{HOCl}$ levels?