Which of the following statements is false about catalysts? A) Enzymes are biological catalysts. B) A catalyst is consumed in a chemical reaction. C) A catalyst increases reaction rate by providing an alternate reaction pathway with a lower activation energy. D) A catalyst may undergo change during a reaction but is unchanged at the end of a reaction. E) Catalysts may be homogeneous or heterogeneous.

Which of the following statements is false about catalysts? A) Enzymes are biological catalysts. B) A catalyst is consumed in a chemical reaction. C) A catalyst increases reaction rate by providing an alternate reaction pathway with a lower activation energy. D) A catalyst may undergo change during a reaction but is unchanged at the end of a reaction. E) Catalysts may be homogeneous or heterogeneous.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

How does the presence of a catalyst influence the rate of a chemical reaction, and what is the underlying mechanism behind this phenomenon?
A scientist is studying how certain factors affect the rate of a particular reaction. She observes that under one set of conditions, the reaction proceeded much faster than under a different set of conditions. Identify the most likely sets of conditions that produced each reaction rate. Drag each item to the appropriate bin. • View Available Hint(s) Reset Help lower temperature larger quantities of reactants smaller quantities of reactants higher temperature Faster reaction Slower reaction
A catalyst increases the rate of reaction by providing an alternative reaction pathway with a higher activation energy. True ⒸFalse
Which of these are factors that impact rate of reaction? temperature reactant concentration presence of a catalyst O reactant particle size
Heat energy and collision of molecules are sometimes not enough to supply the activation energy needed by a reaction. The chemical reaction never happens. Explain how an enzyme can be used to cause the reaction to begin.
Graph of concentration versus time Concentration Time The graph above represents the change in concentration of a reactant versus time during a reversible reaction. The diagram below that shows the effect of a catalyst on the change in concentration for this reactant relative to its initial change is Concentration ☐ Concentration ☐ Time Concentration ► Time Concentration Time Time
How does adding a catalyst affect the rate of a chemical reaction? Has no effect on the rate of a reaction Decreases the reaction rate since there will be less reactants to from products quickly. Decreases the rate of reaction because the reactants molecules have lower kinetic energy limiting collisions Increases the rate of reaction by lowering the activation energy of the reaction without being used up in the reaction
the rate of a reaction with a catalyst present is faster than without a catalyst present true or false?
Which statement regarding catalyst is incorrect It is regenerated during the reaction O increases the rate of a reaction by O providing an alternative mechanism The catalyst provided a mechanism O .with a higher activation energy The catalyst participates in the O reaction