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122ch14a_002 - ‘_— Time(mln Mo A(a Mel B A Mol A(b...

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Unformatted text preview: ‘_— Time(mln) Mo! A (a) Mel B A Mol A (b) Rate (A mol Ala) *_ 0 0.065 0.000 _. m 10 3 0.051 0.014 -0.014 2.3 x 10'5 m 20 0.042 0.023 -0.009 1.5 x10‘5 ' W 30 ' 0.036 0.029 - #0006 1.0 x 10'5 ____ —*_ 40 ' 0.031 0.034 -0.005 0.8 81075 W .{f‘I Time Time Interval Concentratlon A CH9 Rate (min) (mln) _ gflfl (m) (M Is) ____._fl)____—__ 0.0 ‘ 1.85 54.0 54.0 1.58 -0.27 8.3 X '10" 107.0 53.0 1.36 -0.22 6.9 X 10 5 21.5.0 108 1.02 -0.34 5.3 X 10 5 ' 430.0 215 0.580 -0.44 3.4 X 10‘ From'the slopes of the lines in __ the figure at right, the rates are: Time (min) at t = 100 min, —3.9 K 10'3 M/min or -6.5 x 10'5 Me; at 400 min, -1.3 x 10-3 M/min or —3.0 x 10-5 Mls. 9-5 {- 100 200 300 "A 221451111215 in? “ 5“” ' - ‘ _ z .If [A] changes «153:3qu change but the rate constant k will re__main the same i The rate law is a general algebraic eggressio n for the rate of a reaction (dependent-i variable) at any reactant concentrationl (independent variables); there are an infinite ’- ‘number of combinations of [A] and rate The rate constant k, is the proportionality ? I. constant that does not change (unless temperatore changes or adulyxf I2i fraem‘). " “2;“; ’4- {4 .11_ ' .511 [,4 - . . I ' ' ,/ 1/ A 4 -4’ 14",- K 4‘ . ’...6'-(4 .r - .’;.‘ A _-fl .- _. flflnyam ImWIflAWIEA fifilrmi ”mm-E?EM-H —__——.- -'A‘-anlnAYllnA— Emfizalfilfigall- -W_ I IMMEEIEVHV/I film—Efi/ [EA—flan .. . _ mamm— « BMW” 5 7% I- _ I.A- ”' {(_4 I a I" ...
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