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Questions and Answers
What does a large value of the equilibrium constant Kc indicate about a reaction?
What does a large value of the equilibrium constant Kc indicate about a reaction?
- The reaction consumes most reactants. (correct)
- The reaction goes to completion. (correct)
- The reaction has equal amounts of reactants and products.
- The reaction is at static equilibrium.
In a static equilibrium, the concentrations of reactants and products do not change over time.
In a static equilibrium, the concentrations of reactants and products do not change over time.
True (A)
What is dynamic equilibrium?
What is dynamic equilibrium?
Dynamic equilibrium is a state where the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products.
Reversible reactions can proceed in both _____ and _____ directions.
Reversible reactions can proceed in both _____ and _____ directions.
Match the following characteristics with their respective types of equilibrium:
Match the following characteristics with their respective types of equilibrium:
Which of the following statements best describes dynamic equilibrium?
Which of the following statements best describes dynamic equilibrium?
At equilibrium, the concentrations of reactants and products change over time.
At equilibrium, the concentrations of reactants and products change over time.
What is needed for an equilibrium state to be achieved in a chemical reaction?
What is needed for an equilibrium state to be achieved in a chemical reaction?
In a reversible reaction, products can __________ back to form reactants.
In a reversible reaction, products can __________ back to form reactants.
Match the following terms with their correct characteristics:
Match the following terms with their correct characteristics:
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Study Notes
Reversible Reactions
- Reactions where products can recombine to form reactants.
- These reactions never complete.
- Proceed in both directions: forward and reverse.
Dynamic Equilibrium
- Forward and reverse reactions occur at equal rates but in opposite directions.
- Equilibrium state means the overall reaction does not stop.
- Achievable only in closed systems where no substances can enter or leave.
- At equilibrium, the amount of reactants and products remains constant.
- Physical properties like color, density remain constant.
- Equilibrium state is attainable from either direction: starting with reactants or products.
Equilibrium Constant
- Indicates the extent of a reaction at equilibrium.
- Large Kc: The reaction proceeds almost to completion, with mostly products remaining.
- Small Kc: The reaction reaches equilibrium with little conversion of reactants to products.
- Moderate Kc: Comparable amounts of reactants and products at equilibrium.
Factors that Affect Equilibrium State
- Concentration
- Pressure
- Temperature
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