6. What is the effect of increasing the concentration of a reactant in the reactant rate?A.) The rate of reaction increasesB.) The rate of reaction decreases7. Which of the following does not affect reaction rate?A.) Temperature8. How do catalysts speed up a chemical reaction?A.) The reaction becomes endothermicB.) The reaction becomes exothermicC.) Effective collision between reacting molecules is producedD.) An alternative pathway with lower activation energy is produced9. What is the order of reaction wherein the rate depends on the concentration of a single reactant raised to the first power?A,) First order reactions B.) Second order reactions10. What is the molal freezing point depression constant of water?A.) 1.86°C/mC.) The rate of reaction is not affectedD.) the rate of reaction may increase or decreaseB.) Nature of reactantC.) Surface areaD.) PressureC.) Zero order reactions D.) Both a and bB.) 0.512°C/mC.) 6.26 °C/mD.) 2.52°C/m

1.Reaction rate is the speed at which reaction procedes 2.Various factors affect rate of reaction.…

6. What is the effect of increasing the concentration of a reactant in the reactant rate? A.) The rate of reaction increases B.) The rate of reaction decreases 7. Which of the following does not affect reaction rate? A.) Temperature 8. How do catalysts speed up a chemical reaction? A.) The reaction becomes endothermic B.) The reaction becomes exothermic C.) Effective collision between reacting molecules is produced D.) An alternative pathway with lower activation energy is produced C.) The rate of reaction is not affected D.) the rate of reaction may increase or decrease B.) Nature of reactant С.) Surface areа D.) Pressure

6. What is the effect of increasing the concentration of a reactant in the reactant rate? A.) The rate of reaction increases B.) The rate of reaction decreases 7. Which of the following does not affect reaction rate? A.) Temperature 8. How do catalysts speed up a chemical reaction? A.) The reaction becomes endothermic B.) The reaction becomes exothermic C.) Effective collision between reacting molecules is produced D.) An alternative pathway with lower activation energy is produced C.) The rate of reaction is not affected D.) the rate of reaction may increase or decrease B.) Nature of reactant С.) Surface areа D.) Pressure

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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14. Why does the rate of the reaction decrease over time? A. Exothermic reactions lose heat which cools the reaction which decreases the reaction rate. B. As the reaction proceeds, the concentration of the products results in fewer collisions. C. As the reaction proceeds, a decrease in the concentration of reactants results in fewer successful collisions. D. Not all molecules will react and some choose to stay in their present form. E. none of the above
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3
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