HOMEWORK II-1 22.16b The effective rate constant for a gaseous reaction that has a Lindemann–Hinshelwood mechanism is 1.7 × 10 −3 s −1 at 1.09 kPa and 2.2 × 10 −4 s −1 at 25 Pa. Calculate the rate constant for the activation step in the mechanism. 22.12 Use mathematical software or an electronic spreadsheet to examine the time dependence of [I] in the reaction mechanism A → I → P ( k 1 , k 2 ). You may either integrate eqn 22.39 numerically (see Appendix 2) or use eqn 22.40 directly. In all the following calculations, use [A]0 = 1 mol dm −3 and a time range of 0 to 5 s. (a) Plot [I] against t for k 1 = 10 s −1 and k 2 = 1 s −1 . (b) Increase the ratio k 2 / k 1 steadily by decreasing the value of k 1 and examine the plot of [I] against t at each turn. What approximation about d[I]/d
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This note was uploaded on 05/01/2011 for the course CHEM 345 taught by Professor Cardelino during the Fall '09 term at Spelman.