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Level 197

Enzymes & Rate Laws


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Enzymes are (biological catalysts)
- all catalysts increase the rates of chemical reactions *without themselves being consumed*
?/t
rate =
reaction diagram describes
energy levels of reactants and products
reactants must reach an
activation energy to be converted
Kinetics=
how fast do we get over the hill?
k[R]
(to represent velocity) v=
s?¹
units of rate constant k
v=k[A]
Rate Law for 1st order
ln[A]=-kt + ln[A0]
integrated rate law for k[A]
straight line plot
ln[A] vs time
k[A]²
Rate law, second order
1/[A]=kt + 1/[A0]
(second order) Integrated rate law
1/[A] vs time
second order straight line plot
Vf=Vr
at equilibrium (?) no net change in the concentrations of reactants is occurring so
[P]/[R]=k1/k?1
in ? you can rearange the rate laws putting the
k1/k?1
is the keq
keq=
[p]/[R]