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Unformatted text preview: not be memorized, but easily derived from the appropriate rate expression). • The rate expression, determined only experimentally, need not be a simple one, i.e., it
need not contain whole numbers, or positive numbers for that matter although this is often
the case. • In general, given the rate as a function of concentration, reaction order can be determined
as follows: • If only one reactant is involved, since rate = k [conc.]n, find the ratio of the rates at two
different concentrations and apply the relation: n
rate2 ⎛ [conc 2 ] ⎞
⎟ ; n is the reaction order.
=⎜
⎜
⎟
rate1 ⎝ [conc1 ] ⎠
• If two reactants, A and B, are involved, rate = k [A]m [B]n: • Find the ratio of the rates when [B] is constant but [A] changes. Using the equation above,
find the order with respect to A. • Repeat the process when [A] is constant but [B] changes to determine the order with respect
to B. Orders...
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This note was uploaded on 09/23/2010 for the course CS 001 taught by Professor Jix during the Spring '10 term at Riverside Community College.
 Spring '10
 jix

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