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Summary AP Chemistry Unit 5 exam rated
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AP Chemistry Unit 5 exam rated
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AP Chemistry Unit 5 exam ratedkinetics - how quickly or slowly a rxn occurs
equilibrium - has to do with the extent to which a rxn will occur
activation energy - determines kinetics of the rxn
reaction rate - r= ∆[product] / ∆t = -∆[reactant] / ∆t
∆t: change in time
∆[product or reactant]: change in molar concentration
relative reaction rates: 2A + 3B <--> C + 4D - 2A + 3B <--> C + 4D
rB = 3/2rA
rC = -1/2rA
rD = -2rA
rA = 2/3rB = -2rC = -1/2rD
surface area - greater degree to which reactants are exposed to each other, the
faster the reaction will proceed
, AP Chemistry Unit 5 exam rated
temperature - increasing temperature will increase the rate of reaction:
-average velocity of molecules goes up, when potentially reactive molecules
collide there is a greater probability they will react (get over the activation barrier
easier)
-bonds within the reacting molecules are vibrating with more energy and are
closer to the breaking point
inhibitor - opposite of catalyst
concentration of reactants - most important factor
rate law
rate law - how reaction rate depends on concentration of reactants
zero order - r=k
plot: y-axis is [A], slope = -k
[A] - [A]0 = -kt
first order - r=k[A]
plot: y-axis is ln[A], slope = -k
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