Kinetics Quiz

What is activation energy?

• The energy required to start a reaction

• The energy produced by a reaction

• The energy needed to stop a reaction

• The energy released when a catalyst is added

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What role does a catalyst play in a chemical reaction?

• It increases the activation energy

• It decreases the activation energy

• It has no effect on the activation energy

• It consumes the reactants

Which of the following is NOT true about catalysts?

• Catalysts are consumed in the reaction

• Catalysts lower the activation energy

• Catalysts can be used over and over again

• Catalysts speed up the reaction

What does the integrated rate law for a first-order reaction look like?

For a second-order reaction, what does the integrated rate law equation represent?

• The concentration of reactants over time

• The change in temperature over time

• The pressure change over time

• The volume change over time

What happens to the rate of a reaction if the concentration of a reactant in a first-order reaction is doubled?

• The rate remains the same

• The rate doubles

• The rate halves

• The rate quadruples

In a chemical reaction, if the activation energy is high, what does this imply?

• The reaction will be very fast

• The reaction will be very slow

• The reaction will not happen

• The reaction will be instantaneous

Which of the following statements is true about the effect of a catalyst on the equilibrium position of a reversible reaction?

• It favors the formation of products

• It favors the formation of reactants

• It does not affect the equilibrium position

• It destroys the reactants

• It represents the activation energy

• It represents the half-life of the reaction

How does temperature generally affect the rate of a chemical reaction?

• Increases the rate by lowering activation energy

• Decreases the rate by increasing activation energy

• Increases the rate by providing more energy to the reactants

• Has no effect on the rate of the reaction