Le Chatelier’s Principle (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does Le Chatelier's Principle predict when stress is applied to a system in equilibrium?
What does Le Chatelier's Principle predict when stress is applied to a system in equilibrium?
Equilibrium shifts to reduce the stress
If reactant concentration increases in equilibrium, which reaction is favoured?
If reactant concentration increases in equilibrium, which reaction is favoured?
Forwards reaction
What happens when product concentration decreases in an equilibrium system?
What happens when product concentration decreases in an equilibrium system?
Forwards reaction is favoured
For (ΔH = -92 kJ), what happens if temperature increases?
For (ΔH = -92 kJ), what happens if temperature increases?
Reverse reaction favoured, NH₃ decreases
When pressure increases on , which direction shifts?
When pressure increases on , which direction shifts?
Right (4 gas molecules → 2 molecules)
What effect does a catalyst have on the equilibrium position?
What effect does a catalyst have on the equilibrium position?
No effect on equilibrium position
Which single factor changes the value of the equilibrium constant Kc?
Which single factor changes the value of the equilibrium constant Kc?
Temperature
For (ΔH = 26 kJ), what happens if temp decreases?
For (ΔH = 26 kJ), what happens if temp decreases?
Reverse reaction favoured (exothermic)
Adding NaCl to causes what shift?
Adding NaCl to causes what shift?
Left (common-ion effect, more blue)
In , how many reactant vs product gas molecules?
In , how many reactant vs product gas molecules?
3 reactant molecules, 2 product molecules