5. Which of the following statements is correct? A. The rate of a reaction is independent of temperature change. B. The rate of a reaction is same at any time during the reaction. C. The rate of a reaction decreases with increase in concentration of reactant(s). D. The rate of a reaction decreases with passage of time as the concentration of reactants decreases. . What do you call the minimum amount of energy needed to start a reaction? A. activation energy C. entropy of reaction B. energy of reaction D. reaction mechanism energy . When a lit match is touched to the wick of a candle, the candle begins to burn. When the match is removed, the candle continues to burn, what is the role of the match? A. behaves as a catalyst C. is part of the rate determining step B. supplies the activation energy D. lowers the activation energy barrier . How does a catalyst increase the rate of a reaction? A. increasing the concentration of reactant(s) B. decreasing the concentration of the reactant(s) C. increasing the activation energy of the overall reaction D. decreasing the activation energy of the overall reaction . Which of the following will decrease the rate of reaction? A. Catalytic poison B. Catalytic promoters C. Negative catalyst D. Positive catalyst
5. Which of the following statements is correct? A. The rate of a reaction is independent of temperature change. B. The rate of a reaction is same at any time during the reaction. C. The rate of a reaction decreases with increase in concentration of reactant(s). D. The rate of a reaction decreases with passage of time as the concentration of reactants decreases. . What do you call the minimum amount of energy needed to start a reaction? A. activation energy C. entropy of reaction B. energy of reaction D. reaction mechanism energy . When a lit match is touched to the wick of a candle, the candle begins to burn. When the match is removed, the candle continues to burn, what is the role of the match? A. behaves as a catalyst C. is part of the rate determining step B. supplies the activation energy D. lowers the activation energy barrier . How does a catalyst increase the rate of a reaction? A. increasing the concentration of reactant(s) B. decreasing the concentration of the reactant(s) C. increasing the activation energy of the overall reaction D. decreasing the activation energy of the overall reaction . Which of the following will decrease the rate of reaction? A. Catalytic poison B. Catalytic promoters C. Negative catalyst D. Positive catalyst
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter17: Equilibrium
Section: Chapter Questions
Problem 9CR
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Transcribed Image Text:26. Which of the following statements is correct?
A. The rate of a reaction is independent of temperature change.
B. The rate of a reaction is same at any time during the reaction.
C. The rate of a reaction decreases with increase in concentration of reactant(s).
D. The rate of a reaction decreases with passage of time as the concentration of reactants decreases.
27. What do you call the minimum amount of energy needed to start a reaction?
A. activation energy
C. entropy of reaction
B. energy of reaction
D. reaction mechanism energy
28. When a lit match is touched to the wick of a candle, the candle begins to burn. When the match is removed,
the candle continues to burn, what is the role of the match?
A. behaves as a catalyst
C. is part of the rate determining step
B. supplies the activation energy
D. lowers the activation energy barrier
29. How does a catalyst increase the rate of a reaction?
A. increasing the concentration of reactant(s)
B. decreasing the concentration of the reactant(s)
C. increasing the activation energy of the overall reaction
D. decreasing the activation energy of the overall reaction
30. Which of the following will decrease the rate of reaction?
A. Catalytic poison
C. Negative catalyst
D. Positive catalyst
B. Catalytic promoters
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