Chem_208_07_web - Updated Page 2 for PS3 is available (also...

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Updated Page 2 for PS3 is available (also on web) Grids for plotting in question 2 added Reaction in question 2 changed to C 2 F 4 ½C 4 F 8 TODAY: Finishing material through end of 14.8, part of 14.9 THURS: Finishing 14.9 and doing 14.10
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Effect of Concentration : The Rate Law Consider the reaction: aA +bB gG + hH The rate of reaction can often be expressed as: rate = k[A] m [B] n ….. • k is the rate constant of the reaction • m,n usually 0, 1 or 2 but may be fractions, or negative. • m,n are generally not related to a,b, etc. • if m = 1, reaction is first order in A • if n = 2, reaction is second order in B • overall order of reaction is sum of exponents (e.g., 1+2 = 3) Rate Law (m, n) must be determined by experiment…. .
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Method of Initial Rates 1. Measure reaction rate for a known set of initial concentrations. BrO 3 - (aq) + 5Br - (aq) + 6H + (aq) 3Br 2 (l) + 3H 2 O (l) Expt. [BrO 3 - ][ B r - H + ]I n i t i a l R a t e ( M / s ) _______________________________________________________ 1 0.10 0.10 0.10 8.0 x 10 -4 2. Carry out measurement again, using one different initial concentration.
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This note was uploaded on 05/18/2008 for the course CHEM 2080 taught by Professor Davis,f during the Spring '07 term at Cornell University (Engineering School).

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Chem_208_07_web - Updated Page 2 for PS3 is available (also...

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