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Ch. 15 Kinetics Exam Review. 1 Which statement concerning relative rates of reaction is correct for the decomposition of phosphine? 4 PH 3 (g) → P 4 (g)

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Presentation on theme: "Ch. 15 Kinetics Exam Review. 1 Which statement concerning relative rates of reaction is correct for the decomposition of phosphine? 4 PH 3 (g) → P 4 (g)"— Presentation transcript:

1 Ch. 15 Kinetics Exam Review

2 1 Which statement concerning relative rates of reaction is correct for the decomposition of phosphine? 4 PH 3 (g) → P 4 (g) + 6 H 2 (g) a) The rate of disappearance of PH 3 is 6/4 the rate of appearance of H 2. b) The rate of appearance of P 4 is equal to the rate of appearance of H 2. c) The rate of disappearance of PH 3 is 1/4 the rate of appearance of P 4. d) The rate of disappearance of PH 3 is 4 times the rate of appearance of H 2. e) The rate of appearance of H 2 is 6 times the rate of appearance of P 4.

3 E

4 2 Which relationship is correct for the rate of decomposition of dinitrogen pentaoxide? 2 N 2 O 5 (g) → 4 NO 2 (g) + O 2 (g) a) b) c) d) e)

5 C

6 3 Ozone decomposes to oxygen according to the balanced chemical equation below. 2 O 3 (g) → 3 O 2 (g) If the rate of disappearance of ozone is -7.2  M/s, what is the rate of formation of oxygen? a) 4.8  M/s b) 7.2  M/s c) 1.1  M/s d) 1.4  M/s e) 2.2  M/s

7 C

8 4 Which of the following changes are likely to increase the rate of a chemical reaction? 1.Adding a catalyst 2.Increasing the temperature of the reactants 3.Increasing the concentrations of the reactants a) 1 onlyb) 2 onlyc) 3 onlyd) 1 and 3 e) 1, 2, and 3

9 E

10 5 What is the name given to a substance that increases the rate of a chemical reaction but is not itself consumed? a) reactantb) productc) intermediate d) catalyste) element

11 D

12 6 What is the overall order of the reaction below 2 NO(g) + 2 H 2 (g) → N 2 (g) + 2 H 2 O(g) if it proceeds via the following rate expression? a) zero-order b) first-order c) second-order d) third-ordere) fourth-order

13 D

14 7 For the reaction A + 2B → C, the rate law is What are the units of the rate constant where time is measured in seconds? a) b) c) d) e)


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