18 Integration & Review Part 2v2

18 Integration & Review Part 2v2 - Integration...

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1 1 Exam 2 Tuesday, March 15 8:30 – 10:00 PM 25 MC Questions 4 pts each Ch 14 Kinetics Ch 16: 1 – 7 2 Exam Room Assignments Solar ID 999999999 107873555 Javits 111 107873554 107832965 Javits 109 107832964 107802724 Javits 101 107802723 107765405 Eng 145 107765404 107718267 Eng 143 107718266 107677809 Harriman 137 107677808 107624880 Javits 110 107624879 107530322 Javits 102 107530321 107474929 ESS 001 107474928 107254194 Javits 100 Balc 107254193 000000000 Javits 100 Main To From Room
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2 3 Be sure to bring the following: • Stony Brook ID card • 2 or more #2 pencils and a good eraser • Calculator with spare batteries DO NOT BRING any of the following: • Cell phone, beeper, iPod, or other electronic device • Textbook, notes, or any aids to taking the exam No one will be permitted to leave the exam before 9:15 PM. 4 Tuesday Night Exam: No class Wednesday! Short SmartWork quiz on Buffers Out Tuesday, March 15, noon Due Tuesday, March 22, 8:00 AM Master Buffers before Monday, March 21 Because Monday, March 21: Titrations !
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3 5 2 2 1 [ ] 1 [ ] [ ] Rate 2 2 NO NO O t t t  The reaction rate can be determined by measuring the rate at which the concentration of any reactant or any product changes with time. Any such measurement needs to give the same positive value for the reaction rate, so normalization by a minus sign for reactants and by a stoichiometric coefficient for both is necessary Rate has units of mol L –1 s –1 2 NO 2 2 NO + O 2 Rate of a Chemical Reaction 6 Rate Law The rate law for a reaction gives the dependence of the rate on the concentrations of the reactants. Example Rate = k [CH 3 COOCH 3 ] x [OH - ] y
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4 7 Rate = k [CH 3 COOCH 3 ] x [OH - ] y The exponents x and y are called the orders of the reaction with respect to each respective reactant. The overall order is x + y. k is the rate constant for the reaction. The rate law is determined experimentally (method of initial rates) and then compared with the predictions of proposed mechanisms to identify plausible mechanisms. 8 Method of Initial Rates Determine the overall order of the reaction below using the initial rate data. 3NO + O 3 3NO 2 Experiment [NO] in M [O 3 ] in M Initial Rate 1 0.020 0.010 0.028 M s -1 2 0.020 0.020 0.057 M s -1 3 0.040 0.020 0.227 M s -1 Rate = k [NO] x [O 3 ] y A) 1 B) 2 C) 3 D) 4 E) 5
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5 9 Predict a Rate Law from a Reaction Mechanism A reaction mechanism is a series of
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18 Integration & Review Part 2v2 - Integration...

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