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Chemical Kinetics


Collision Theory molecules or atoms must collide in order to react not all collisions result in a reaction
new bonds can form only if... the atoms are close enough to share electrons
unsuccessful collisions ineffective collisions
collisions that lead to products effective collisions
effective collision must happen with: speed, energy, force to BREAK bonds in the colliding molecules
the frequency of collisions should depend on: the number of molecules per unit volume, aka. concentration
higher temperature means: the more molecules will possess the required activation energy and thus a higher proportion of collisions will be effective
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
law of mass action when a reaction is at equilbrium, the rates of these two reactions are identical. no net change is observed
K rate constants quantity in [] = molarity concentration
the rate law for a reaction cannot be... predicted from the stoichiometry of the reaction; it must be determined experimentally
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
Created by: kwoneee96