122ch14b_002

122ch14b_002 - " ' I _ Initial Rate Experiment [N0]...

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Unformatted text preview: " ' I _ Initial Rate Experiment [N0] (M) [0,] (M) (M 1's) '3 1 0.0126 0.0125 " 1.41 x10-2 2 0.0252 0.0250 1.13 x 10-1 _ - 3 . 0.0252 0.0125 5.64 x 1022 . _ '_'.7:::EZEMTEZ_M*:TW—u ;'_:__aMzW1 : 4;. figmm if:*._*‘“f“::; 22220 222. 1122;4/ /1— “:3 ' ‘ . Mmflb _______________________ (153.095.3223 _.= HéfiLA/azfl _) I .__._.Q:1‘_27‘_Z::‘_2; : i_.;._'_:_..'.:Q";-_:_I:;:fi )7‘ _ __T"::Hif__—f'i:I )xufl'fflffia7‘0 @ at. ._ Ml ' [4.5- I}? @ 4. 4 Y - - v» 2 w 'e I ' ___________'— iExperiment [5,0311% [1‘] (M) (M/s) <""“' 22] [47,96 11:4 @ .1. 0.018 0.036 2.6 X 10" _ '2 0.027 0.0361 3.9 X 10“5 3 0.036 0.054 7.8 X 10“5 4 0.050 0.072 1.4 X 10—5 Increasing [8,0, '1 by a factor of 1.5 while holding [1‘] constant increases the rate by a factor of 1.5 (Experiments 1 and 2). Doubling [S203 '] and increasing [1'] by a factor of 1.5 triples the rate (2 x 1.5 = 3. experiments 1 and 3). Thus the reaction is first order in both [8205 '] and [I'] ; rate = R [3208 ‘] [I']. @ mmalnmal ’752 r = 4 _' mix—lim- #2 4-44 , 'C - '_ . 2/422 41 fi a?” pfé/Wffl- —_..___..__.___.’._._.. :9 52 -‘ '5 / J- . l/ ' ! ' .2 I 255.2(2) g5) secondorderreacfion depends on the concentration of a single reactant raised to : I the second power, or the concentrations of two reactants raised to the first power, ' \ _ rate = km]2 or k{A][B]. ::“:¢_ giggrfig‘T/ziemflé; “‘ i . _. .. .. Ifx/ f - __ :jiii:;":7_7{_e::77" ' ' \\ w '7” ‘ . ‘, I i 4 I 1’ .4 I]. ' _ d @ I _ I’ 9.2.4 I Hm, = "f'f’ Mm ll Make both first- and second-order plots to see which is linear. tlrne(mln) molA [A] (M) . InIA] 11mm) _— 0‘ 0.065 0.65 -0.43 1.5 . ———-————~ 10 0.051 0.51 -0.67 2.0 20 ' 0.042 0.42 0.37 2.4 30 0.036 0.36 -1.02 2.8 ' 40 . 0.031 0.31 -1.17 3.2 o 10 20 30.1050 . 0'10 20 36 40 so ‘ amt-in) - time (min). ‘ ” L ‘1', (I n t ‘ 2-: f : ...
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This note was uploaded on 07/17/2008 for the course CHEM 122 taught by Professor Zellmer during the Summer '07 term at Ohio State.

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122ch14b_002 - " ' I _ Initial Rate Experiment [N0]...

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