Physical Chemistry Third Edition

542 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms first step is immediately consumed by the second step, which has ...

12.4 Reaction Mechanisms and Rate Laws 543 Equation (12.4-6) is now solved for [O]: [O]K 1 [O 3 ] [O 2 ] This formula is substi ...

544 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms intermediatesare negligibly small. We say that the reactive inte ...

12.4 Reaction Mechanisms and Rate Laws 545 Exercise 12.10 Apply the steady-state approximation to the reaction of Exercise 12.9. ...

546 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms One possibility is that the inelastic collision in step 1 excite ...

12.4 Reaction Mechanisms and Rate Laws 547 Solution a.The equilibrium approximation gives K 1  k 1 k′ 1  [A][A∗] [A]^2  [A∗] ...

548 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms Solution We write equilibrium expressions for steps (1) and (2): ...

12.4 Reaction Mechanisms and Rate Laws 549 The proposed mechanism is (1) N 2 O 5
NO 2 +NO 3 (2) NO 2 +NO 3 −→NO+O 2 +NO 2 (3) N ...

550 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms A. Construct a possible set of steps. The steps must add up to ...

12.4 Reaction Mechanisms and Rate Laws 551 Solution The mechanism could be (1) aA+bB−→reactive intermediates (slow, rate-limitin ...

552 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms EXAMPLE12.16 The stoichiometry of a reaction is B+2F+H−→D+other ...

12.4 Reaction Mechanisms and Rate Laws 553 Exercise 12.16 a.Show that the proposed mechanism in the previous example leads to th ...

554 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms PROBLEMS Section 12.4: Reaction Mechanisms and Rate Laws 12.17Th ...

12.4 Reaction Mechanisms and Rate Laws 555 12.24For the reaction 3HNO 2 −→H 2 O+2NO+H++NO− 3 assume the mechanism (1) 2HNO 2
NO ...

556 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms 12.33 a.Find the rate law for the reaction H++I−+H 2 O 2
H 2 O+ ...

12.5 Chain Reactions 557 Once bromine atoms are formed in the initiation step, the reaction can proceed without further initiati ...

558 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms which reproduces the empirical rate law with the following expre ...

12.5 Chain Reactions 559 The Rate Law of the Photochemical Reaction The rate of the initiation step of Eq. (12.5-9) is proportio ...

560 12 Chemical Reaction Mechanisms I: Rate Laws and Mechanisms whereka,kb, andkcare temperature-dependent parameters. In the co ...

12.5 Chain Reactions 561 (5) H+O 2 +M−→HO 2 +M (termination) (6) H+wall−→stable species (termination) (7) HO+wall−→stable specie ...