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Chemistry
11th -
12thgrade
AP Chemistry Unit 5 - Chemical Kinetics
15 questions
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- 1. Multiple Choice0; 2; 21; 2; 31; 2; 20; 1; 1
- 2. Multiple ChoiceWhich one of the following is a first order, overall reactionk1= 1.000 M s-1k1= 5403.2 M½ s½k1= 1.23 x 10-6 M-1 s-1k1= 10.7 s-1
- 3. Multiple ChoiceA. is most exothermicB. is most exothermicC. is most exothermicD. is most exothermic
- 4. Multiple ChoiceConsider the following rate law: Rate = k[A]n[B]m
How are the exponents n and m determined?by using balanced chemical equationBy using the subscripts for the formulasBy educated guessBy experiment - 5. Multiple ChoiceA. has largest EaB. has largest EaC. has largest EaE. has largest Ea
- 6. Multiple ChoiceWhat would be my the overall order of this rate law?
Rate=[A]2[B]10 Order1st Order2nd Order3rd Order - 7. Multiple ChoiceA. is the slowest reactionB. is the slowest reactionC. is the slowest reactionE. is the slowest reaction
- 8. Multiple ChoiceFor 2A + B → 2C, the rate of production of C has been found to be 12 M/s. During that reaction, the rate of reaction was?12 M/s24 M/s6 M/sCannot tell without more data
- 9. Multiple ChoiceA. is the fastest reactionB. is the fastest reactionC. is the fastest reactionE. is the fastest reaction
- 10. Multiple Choicestep 1: O3 → O2 + O
step 2: O3 + O → 2 O2
The oxygen atom (O) is considered to be a(n)...reactantcatalystreaction intermediateactivated complex - 11. Multiple ChoiceThe reaction of (CH3)3CBr with hydroxide ion proceeds:
(CH3)3CBr(aq) + OH-(aq) → (CH3)3COH(aq) + Br-(aq)
What will the initial rate (in mol/L*s) be in Experiment 4?0.0030.0060.0090.018 - 12. Multiple ChoiceIn any first order reaction, as the reaction proceeds at constant temperature, which describes the corresponding effects on k (the rate constant) and rate?k remains the same; rate decreasesk and rate both remain the samek remains the same; rate increasesk decreases; rate remains the same
- 13. Multiple ChoiceA compound has a half-life of 14 min. How much time will it take a 12 mol sample to decay to 1.5 mol?14 min28 min42 min56 min
- 14. Multiple Choicerate = k[CO]2[O2]2rate = k[CO]2[O2]rate = k[CO][O2]2rate = k[CO][O2]1/2
- 15. Multiple ChoiceIO-, because it was used as a reactant in an earlier step and reproduced in a subsequent stepI-, because it was used as a reactant in an earlier step and reproduced in a subsequent stepIO-, because it was produced in an earlier step and used up in a subsequent stepI-, because it was produced in an earlier step and used up in a subsequent step
- Answer choicesTagsAnswer choicesTags