9. What effect does a catalyst have on a reaction? A. It changes the AH of a reaction. B. It increases the kinetic energy of the reactants. C. It decreases the potential energy of the products. D. It provides a reaction mechanism with a lower activation energy. 10. What does an additional catalyst to a reaction provide? A. lower activation energy and lower reaction rate. B. lower activation energy and higher reaction rate. C. higher activation energy and lower reaction rate. D. higher activation energy and higher reaction rate. 11 Which of the follouin

9. What effect does a catalyst have on a reaction? A. It changes the AH of a reaction. B. It increases the kinetic energy of the reactants. C. It decreases the potential energy of the products. D. It provides a reaction mechanism with a lower activation energy. 10. What does an additional catalyst to a reaction provide? A. lower activation energy and lower reaction rate. B. lower activation energy and higher reaction rate. C. higher activation energy and lower reaction rate. D. higher activation energy and higher reaction rate. 11 Which of the follouin

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...

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15..What does Le Châtelier’s principle state about a disturbance to a chemical reaction? A.The reverse reaction is minimized in response to a disturbance. B.The equilibrium position of a reaction shifts to minimize the disturbance. C.The reactants are reformed in response to a disturbance. D.The speed of the reaction increases to counteract the disturbance.
Which of the following is an endergonic process? a. exothermic reactions b. endothermic reactions c. equilibrium reactions d. proposed reactions that do not proceed
- Increasing the temperature of an exothermic reaction results in __________I. More products and fewer reactants.II. More reactants and fewer products.III. More reactants and products.IV. Fewer reactants and products.V. There are no changes in the amounts of reactants and products. - Increasing the temperature of an endothermic reaction results in _____________________________I. More products and fewer reactants.II. More reactants and fewer products.III. More reactants and products.IV. Fewer reactants and products.V. There are no changes in the amounts of reactants and products. Justify all the alternatives.
Which one of the following factors willdecrease (slow down) the rate of a chemicalreaction?A. Increasing the concentration of the reactants.B. Reducing the surface area of solid reactants.C. Increasing the temperature of the system.
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Define explain or describe each of the following terms: a. exthermic reaction b. endothermic reaction c. reversible equation d. dynamic equilibrium
From the reaction energy diagram shown here, match the features on the diagram with their definitions. E A X Y wm C B ◄ A reactants products intermediates transition states A Reaction Coordinate A. X, Y, Z B. C, D C. A D. D E. A, D F. A, B G.B H.C 1. B, C N D
A chemical species that is not consumed during a chemical reaction and increases the rate of the reaction is referred to as a(n): A inhibitor. B catalyst. C spectator ion. D reactive intermediate.
Consider a chemical reaction which has achieved a state of equilibrium. Which of the following statements are true in this equilibrium state? (Mark all that apply.) A. The concentrations of reactants and prodcuts are still changing with time. B. The concentrations of reactants and products is no longer changing with time. C. The rate of the reverse reaction is greater than that of the forward reaction. D. The rates of the forward and reverse reactions are equal. E. The rate of the forward reaction is greater than that of the reverse reaction.
a. Explain how a catalyst increases the speed of a chemical reaction.b. Draw a simple energy profile diagram to show the reaction pathway of a reaction with and without the presence of a catalyst.
The heat of reaction tells us what about a chemical reaction? O a. How fast the chemical reaction will occur. O b. How much energy as heat will be absorbed or released by the chemical reaction. O c. If the chemical reaction is spontaneous or nonspontaneous. Od. The temperature at which the chemical reaction will reach after achieving maximum rate of reaction. Jump to... Co search
Which of the following corresponds to the fastest reaction at room temperature? A. O 100 in Progress of the reaction C OD. 107 Progress of the reaction Progress of the reaction Progress of the reaction