pre-lab 10 ch 204

# pre-lab 10 ch 204 - obennoskey(blo242 Pre-lab 10 Lyon(52635...

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obennoskey (blo242) – Pre-lab 10 – Lyon – (52635) 1 This print-out should have 14 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points Consider the mechanism NO 2 + ± 2 NO 2 ± + ± k 1 , slow ± + NO 2 NO 2 ± k 2 , Fast What is the rate law? 1. rate = k 1 [NO 2 ±] [±] 2. rate = k 2 [NO 2 ] [±] 3. rate = k 1 k 2 [NO 2 ] 2 4. rate = k 2 [NO 2 ] 2 5. rate = k 1 [NO 2 ] [± 2 ] 002 (part 1 oF 3) 10.0 points A particular reaction is Found to have the rate law R = k [A] [B] 2 How is the rate a²ected a) iF the initial concentration oF A is cut in halF? 1. Rate does not change. 2. Rate is increased by a Factor oF 2. 3. Rate is reduced by 1 2 . 4. Rate is reduced by 1 4 . 5. Rate is reduced by 1 3 . 6. Rate is increased by a Factor oF 3. 7. Rate is reduced by 1 9 . 8. Rate is increased by a Factor oF 4. 9. Rate is increased by a Factor oF 9. 003 (part 2 oF 3) 10.0 points b) iF the initial concentration oF B is tripled? 1. Rate does not change. 2. Rate is increased by a Factor oF 3. 3. Rate is reduced by 1 4 . 4. Rate is reduced by 1 3 . 5. Rate is reduced by 1 9 . 6. Rate is increased by a Factor oF 9. 7. Rate is increased by a Factor oF 2. 8. Rate is increased by a Factor oF 4. 9. Rate is reduced by 1 2 . 004 (part 3 oF 3) 10.0 points c) iF the initial concentration oF A is doubled, but the concentration oF B is cut in halF? 1. Rate is increased by a Factor oF 4. 2. Rate is reduced by 1 9 . 3. Rate is increased by a Factor oF 9. 4. Rate is increased by a Factor oF 3. 5. Rate is reduced by 1 3 . 6. Rate is reduced by 1 2 . 7. Rate is increased by a Factor oF 2. 8. Rate is reduced by 1 4 . 9. Rate does not change. 005 10.0 points

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obennoskey (blo242) – Pre-lab 10 – Lyon – (52635) 2 A reaction mechanism has several steps. The rate of the overall reaction is equal to 1. the rate of the slowest step. 2. the average rates of the steps. 3. the rate of the fastest step. 4. the diFerence between the rate of the fastest step and the rate of the slowest step. 006
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pre-lab 10 ch 204 - obennoskey(blo242 Pre-lab 10 Lyon(52635...

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