Equilibrium Chemical Reaction Quiz Questions
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Equilibrium Chemistry
- 1.Which factors must be equal in a reversible chemical reaction at equilibrium?
- A.
The concentrations of the reactants and products
- B.
The potential energies of the reactants and products
- C.
The activation energies of the foward and reverse reactions
- D.
The rates of reaction of the foward and reverse reactions
- 2.
- A.
Rate of the foward reaction is greater than the rate of the reverse reaction
- B.
Rate of the reverse reaction in greater than the rate of the forward reaction
- C.
Concentration of the reactants reaches zero
- D.
Concentration of the products remains constant
- 3.Given the reaction at equilibrium:A(g) + B(g) + heat<----> AB(g)As the pressure increases at constant temperature, the value of the equilibrium constant
- A.
Decreases
- B.
Increases
- C.
Remains the same
- 4.Which type of reaction is most favored by an increase in temperature?
- A.
Endothermic
- B.
Exothermic
- C.
Spontaneous
- 5.The equilibrium constant for a given system will change when:
- A.
The temperature changes
- B.
The reactant concentration changes
- C.
The pressure changes
- D.
A catalyst is added
- 6.A solution that is at equilibrium must be
- A.
Concentrated
- B.
Dilute
- C.
Saturated
- D.
Unsaturated
- 7.When is equilibrium reached in a chemical reaction?
- A.
When the forward reaction stops.
- B.
The reverse reaction stops.
- C.
The concentrations of the reactants and products become equal.
- D.
The rates of the forward and reverse reactions become equal.
- 8.For a system at equilibrium, lowering the temperature will always:
- A.
Increase the rate of the reaction
- B.
Increase the concentrations of the products
- C.
Favor the endothermic
- D.
Favor the exothermic
- 9.Which change may occur in a reaction system when a catalyst is addded?
- A.
The potential energy of the reactants increases.
- B.
The potential energy of the products increases.
- C.
The point of equilibrium is reached more rapidly.
- D.
The heat of reaction decreased.
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