Chapter 12 Reaction Kinetics - Chemical Kinetics Chapter 12...

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Chemical Kinetics Chapter 12
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Chemical Kinetics Kinetics – how fast does a reaction proceed? Reaction rate is the change in the concentration of a reactant or a product with time ( M /s). A B rate = - [A] t rate = [B] t [A] = change in concentration of A over time period t [B] = change in concentration of B over time period t Because [A] decreases with time, [A] is negative .
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A B rate = - [A] t rate = [ B ] t time
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Br 2 ( aq ) + HCOOH ( aq ) 2Br - ( aq ) + 2H + ( aq ) + CO 2 ( g ) average rate = - [Br 2 ] t = - [Br 2 ] final – [Br 2 ] initial t final - t initial slope of tangent slope of tangent slope of tangent instantaneous rate = rate for specific instance in time
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rate α [Br 2 ] rate = k [Br 2 ] k = rate [Br 2 ] = rate constant = 3.50 x 10 -3 s -1
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2A B Two moles of A disappear for each mole of B that is formed. rate =
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Chapter 12 Reaction Kinetics - Chemical Kinetics Chapter 12...

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