ratelaw - factors affecting reaction rates o o o chemical...

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factors affecting reaction rates  - chemical kinetics - study of reaction speed physical state of reactants - more collisions >> faster reaction o solid surface area increase >> reaction rate increase reactant concentration - higher concentration >> faster reaction temperature - higher temperature >> higher kinetic molecular energy >> more collisions >> faster reaction catalyst - substances that increase reaction rate w/o being used up collisions must include enough energy and correct positioning to lead to reaction average rate = change in concentration / change in time instantaneous rate - rate at a specific moment in reaction o rates tend to decrease as reaction continues o initial rate - reaction rate when reaction first begins rate of reactant disappearance = rate of product appearance rate law  - shows how rate depends on concentrations aA + bB >> cC + dD rate = k [A]m[B]n k = rate constant, changes w/ temperature (units of rate / units of concentration2)
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ratelaw - factors affecting reaction rates o o o chemical...

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