Kinetics Flashcards
Reaction rate ___ as the reactions proceeds
Decreases
Rate Law
Rate = k[A]^n[B]^m
The __ of reactions orders (exponents) is the ___ order of the reaction
Sum
Overall
[A]f
Zero order
ln[A]f
First order
1/[A]f
Second order
t(1/2)
.693/k
Activation Energy
Difference in energy between the activated complex and reactants
As the temperature of a reaction goes up, the overall fraction of particles with enough energy to overcome Ea ___
Goes up
Relationship between the rate constant and temperature
K=Ae^(-Ea/RT)
Arrhenius Two Point Form
ln(k2/k1)=(-Ea/R)(1/T2 - 1/T1)
Intermediate
Formed then consumed
“Valleys” in multi step reactions
Intermediates
“Peaks” in multi step reactions
Transition states
Overall rate is the ___ step in a multi step reaction
Slowest
Catalysts ___ chemical reactions by ___ the activation energy of the reaction
Speed up
Lowering
Catalysts are ___ then _____
Consumed then produced