April 26th Chemical Kinetics

April 26th Chemical Kinetics - This reaction is running...

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Chemical Kinetics > Reaction Rates Remember, thermodynamics does not tell us anything about reaction rates. Even a big negative value for Delta G, could be very slow and impossible due to kinetics Rates will vary greatly What is a rate? Change in something / change in time Concentration = something Reaction rate = Delta Concentration / Delta Time Delta [A] / delta t 1A + 3B 2C + 4D d[A]/dt , d[B]/dt, d[C]/dt, Overall Reaction Rate : (-d[A]/dt) = (-d[B]/3dt] = (d[C]/2dt) = (d[D]/4dt)
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Unformatted text preview: This reaction is running such that B is changing at -0.0015 moles/second. What is D? A? Overall-d[B]/3dt = d[D] / 4dT 4 Factors that affect reaction rates 1. Nature of the reactant 2. Concentration 3. Temperature 4. Presence of a catalyst The Rate Law Rate Reaction related to concentration of reaction Rate of reaction = k[A] x [B] y [C] z X, y, z = 0, 1, or 2 usually, also known as the ORDER of exponents...
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This note was uploaded on 11/18/2010 for the course CH 302 taught by Professor Holcombe during the Spring '07 term at University of Texas at Austin.

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April 26th Chemical Kinetics - This reaction is running...

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