Horvath Practice Problems 13

Horvath Practice Problems 13 - ones in which the rate...

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where ν I is the stoichiometric factor with the understanding that it is negative for reactants and positive for products. Thus for the reaction given above v = 1 a d [ A ] dt = 1 b d [ B ] dt = 1 c d [ C ] dt = 1 d d [ D ] dt (2.3) Rate Laws One of the primary goals of chemical kinetics is to determine how the rate of a reaction goes. That is to f nd the rate law for the reaction. Kinetics is very much an empirical science that depends much more heavily on experimental results than on a strong theoret- ical foundation. As a result, rate laws must be experimentally determined rather than theoretically predicted. One very important and very common class of rate laws are
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Unformatted text preview: ones in which the rate depends on the concentration of reac-tants present. Again considering the reaction aA + bB cC + dD, the rate laws of this type would be v = k [ A ] n A [ B ] n B , (2.4) where n A and n B are constants, usually integers and k is the rate constant for the reaction. A di f erential rate law for this reaction is then 1 a d [ A ] dt = [ A ] n A [ B ] n B (2.5) The n A and n B powers on the concentrations are called orders of the reaction. 12 DIFFERENTIAL RATE LAWS...
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This document was uploaded on 11/01/2011 for the course CHM 2046 at University of Florida.

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