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11 Nov 2019
1. In order for a chemical reaction to occur, which of the following has to happen? a. molecules must have enough energy b. molecules must collide c. molecules must collide with the proper orientation d. all of the above 2. How many molecules react in a termolecular process? a. b. 2 C. d. 4 3. What step is the rate-determining step in a reaction mechanism? __ a. the slow step b. the fast step c. the first step d. the last step 4. What does a catalyst do to an equilibrium? causes products to be favored b. a. causes reactants to be favored speeds up only the forward reaction d. c. nothing 5. Rate laws are determined by a. looking at the balanced chemical equation b. the number of steps in the reaction mechanism c. experiment d. foolish people (i.e. chemists) who have nothing better to do True (+) or False (0) (2 pts each) 6. Most collisions between molecules do result in a reaction. 7. Increasing the surface tension causes an increase in the reaction rate. 8. If the temperature of a reaction is increased by 20°C, the reaction rate will approximately quadruple. 9. The rate constant, k, has the same value at all temperatures. 10. The rate constant, k, has the same value for all reactions. 11. If the equilibrium constant, K, is very small, products are favored. 12, Kc= Kp 13. A bimolecular process requires a total of two moles of reactants.
1. In order for a chemical reaction to occur, which of the following has to happen? a. molecules must have enough energy b. molecules must collide c. molecules must collide with the proper orientation d. all of the above 2. How many molecules react in a termolecular process? a. b. 2 C. d. 4 3. What step is the rate-determining step in a reaction mechanism? __ a. the slow step b. the fast step c. the first step d. the last step 4. What does a catalyst do to an equilibrium? causes products to be favored b. a. causes reactants to be favored speeds up only the forward reaction d. c. nothing 5. Rate laws are determined by a. looking at the balanced chemical equation b. the number of steps in the reaction mechanism c. experiment d. foolish people (i.e. chemists) who have nothing better to do True (+) or False (0) (2 pts each) 6. Most collisions between molecules do result in a reaction. 7. Increasing the surface tension causes an increase in the reaction rate. 8. If the temperature of a reaction is increased by 20°C, the reaction rate will approximately quadruple. 9. The rate constant, k, has the same value at all temperatures. 10. The rate constant, k, has the same value for all reactions. 11. If the equilibrium constant, K, is very small, products are favored. 12, Kc= Kp 13. A bimolecular process requires a total of two moles of reactants.
Hubert KochLv2
18 Jan 2019