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Chemical Kinetics and Equilibrium
Chemical Kinetics and Equilibrium
19
Chemistry
Undergraduate 1
06/13/2010
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Term
intermediate
 Definition
does not appear in reactant or product
Term
rate determining step
 Definition
slowest step
Term
rate law
 Definition
rate = k[A]^m [B]^n
Term
overall order or rxn
 Definition
sum of rate exponents
Term
zero order rxn
 Definition
k = m/s
conc. vs. time
positive slope
Term
1st order rxn
 Definition
k = 1/sec
ln[A] vs time
negative slope
Term
2nd order
 Definition
k = sec/M
1/[A] vs t
positive slope
Term
negative enthalpy
 Definition
exothermic
Term
positive enthalpy
 Definition
endothermic
Term
Factors affecting rxn rate
 Definition
conc., temp., medium, catalysts
Term
enzymes can...
 Definition
increase collision freq, change orientation, donate e- density, reduce intermolecular bonding
Term
law or mass action
 Definition
products over reatants raised to coefficients
Term
pure solids and liquids...
 Definition
dont appear in equilibrium constant expression
Term
high K =
 Definition
high products
Term
An increase in pressure will shift to
 Definition
least moles of gas
Term
catalysts do not alter
 Definition
equilibrium constant
Term
Arrhenius Equation
 Definition
lnk=(-Ea/R)(1/T)+lnA
Term
Arrhenius Equation ratio
 Definition
lnk2/k1=(Ea/R)(1/T1-1/T2)
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