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Flashcards on Chemical Equilibrium: Le Chatelier's Principle
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What is Chemical Equilibrium?
The state in which the forward and reverse reactions occur at equal rates.
What is Le Chatelier's Principle?
When a system at equilibrium is disturbed, it adjusts to minimize the disturbance.
What are the factors that can affect chemical equilibrium?
Concentration, pressure, temperature, and catalysts.
How does concentration affect chemical equilibrium?
Increasing the concentration of reactants shifts the equilibrium towards the products, and vice versa.
How does pressure affect chemical equilibrium?
Increasing the pressure favors the side with fewer moles of gas.
How does temperature affect chemical equilibrium?
Increasing the temperature favors the endothermic reaction.
What is the role of catalysts in chemical equilibrium?
Catalysts do not affect the position of equilibrium, but they increase the rate at which equilibrium is achieved.
What happens if a stress is applied to a system at chemical equilibrium?
The system responds by shifting the equilibrium to relieve the stress.
Which reaction direction is favored if the concentration of reactants is increased?
The reaction shifts towards the products.
Which reaction direction is favored if the pressure is increased?
The reaction shifts towards the side with fewer moles of gas.
How does an increase in temperature affect an endothermic reaction at equilibrium?
The reaction is favored towards the products.
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Test Your Knowledge
What is the state in which the forward and reverse reactions occur at equal rates?
Chemical Equilibrium
Reaction Rate
Activation Energy
Collision Theory
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Which principle states that when a system at equilibrium is disturbed, it adjusts to minimize the disturbance?
Le Chatelier's Principle
Boyle's Law
Charles's Law
Avogadro's Principle
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Which of the following factors can affect chemical equilibrium?
Concentration
Pressure
Temperature
Catalysts
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How does increasing the concentration of reactants affect chemical equilibrium?
Shifts the equilibrium towards the reactants
Shifts the equilibrium towards the products
Does not affect the equilibrium
Causes the reaction to stop
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What happens if the pressure is increased in a system at chemical equilibrium?
Equilibrium is unaffected
The equilibrium shifts towards the side with fewer moles of gas
The equilibrium shifts towards the side with more moles of gas
The equilibrium is disrupted and the reaction stops
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How does increasing the temperature affect an endothermic reaction at equilibrium?
Shifts the equilibrium towards the reactants
Shifts the equilibrium towards the products
Does not affect the equilibrium
Causes the reaction to stop
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What role do catalysts play in chemical equilibrium?
Shift the equilibrium towards the reactants
Shift the equilibrium towards the products
Do not affect the equilibrium
Increase the rate at which equilibrium is achieved
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How does a system at chemical equilibrium respond to a stress?
The system shifts the equilibrium to relieve the stress
The equilibrium is unaffected by the stress
The reaction stops completely
The equilibrium shifts towards the stress
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Which direction is favored if the concentration of reactants is increased in a chemical equilibrium?
The reaction shifts towards the reactants
The reaction shifts towards the products
The equilibrium is unaffected
The reaction stops completely
Check Answers
Which direction is favored if the pressure is increased in a chemical equilibrium?
The equilibrium is unaffected
The reaction shifts towards the side with fewer moles of gas
The reaction shifts towards the side with more moles of gas
The reaction stops completely
Check Answers
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