Kinetics
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Collision Theory | molecules or atoms must collide in order to react
not all collisions result in a reaction
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| new bonds can form only if... | the atoms are close enough to share electrons
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| unsuccessful collisions | ineffective collisions
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| collisions that lead to products | effective collisions
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| effective collision must happen with: | speed, energy, force
to BREAK bonds in the colliding molecules
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| the frequency of collisions should depend on: | the number of molecules per unit volume, aka. concentration
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| higher temperature means: | the more molecules will possess the required activation energy and thus a higher proportion of collisions will be effective
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| anything about a reaction which facilitates efficient contact between the particles falls in the categories: | surface area
fewer reactant balanced equation
fluid phase
state of matter
the molecular structure of the reactants
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| law of mass action | when a reaction is at equilbrium, the rates of these two reactions are identical.
no net change is observed
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| K | rate constants
quantity in [] = molarity concentration
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| the rate law for a reaction cannot be... | predicted from the stoichiometry of the reaction; it must be determined experimentally
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| catalysts... (4) | increase the rate of the reaction
are not consumed by the reaction
a small quantity of catalyst should be able to affect the rate of reaction for a large amount of reactant
do not change the equilibrium constant for the reaction
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