IMG_0004_NEW_0019

IMG_0004_NEW_0019 - c =Rate law (rate expression or rate...

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Method of lnitial Rates What if the reaction rate depends on more than one reactant? Method of initial rates: O Do experimentswith different initial concentrations lKh O Measure initial reaction rates (at t:0) in each case @ Determine reaction order for each reactant 2NO(g) + 2HzG) -+ Nz(g) + 2H,2O(g) Experimental data: Initial, instantaneous rates Method of lnitial Rates Experimental data: Initial, instantaneous rates O Compare Runs # I and#2 . [NO]*r : [NO]*z and [I{2]x2 :4 x l$l*r . Rates2:4 x Rateal . So Rate of reaction cc O Compare Runs #l and#3 . [NO]*::3 x [NO]*r and [tlz]*:: [Hz]*r . Rates3:!xRatesl . So Rate of reaction
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Unformatted text preview: c =Rate law (rate expression or rate equation) Rate: fh'cw\Lr^n-a W J'wo) r, 14t ffi Reaction Ord er .P- -Al 2No(g) + 2}rz(,) -+ Nz(e) + 2Hzo(g) L w*vrrnw . Rate: Order with respect to NO :a;4 Order with respect to H, : I t,a I Overall reaction order : Sum of orders in rate law Run Concentration (M) Rate (decrease of [NO]) mol L-r s-r [No]o lHzln #t 0.1 0.1 0.062 #2 0.1 0.4 0.246 #3 0.3 0.1 0.558 Run Concentration (M) Rate (decrease of fNOl) mol L-1 s-r [No]o [Hz]n #t 0.1 0.t 0.062 #2 0.1 0.4 0.246 #3 0.3 0.1 0.558 wd7tL) cil")tt W teCI(,,{ t 9--A'-)--#'-\ o9=V t-'19',nl o-oW I z {F,Ul...
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This note was uploaded on 12/27/2011 for the course CHEM 122 taught by Professor Williams during the Fall '10 term at Simon Fraser.

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