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Lecture 18

CHEM 100 Lecture Notes - Lecture 18: Reagent, Chemical Kinetics, Reaction RatePremium

2 pages107 viewsFall 2017

Course Code
CHEM 100
Heather Bass

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CHEM100- Lecture 18 (Beginning of Chapter 7)
Reaction Rates
Chemical kinetics: the area of chemistry concerned with reaction rates and
the sequence of steps by which reactions occur
Reaction rate: Either the increase in the concentration of a product per unit
time or the decrease in the concentration of a reactant per unit time
rate= concentration change/ time change
Factors that affect Reaction Rates
Name of the reactants
Reactant concentration
Reaction temperature
The presence of a catalyst
**** ionic that are dissolved will be fast reactions
****covalent will be slow reactions
The increase of the concentration of a reactions will increase the rate
of the reaction
****double a concentration of a reactant will double the rate of a reaction
****colder the temperature the slower the reaction will be
****higher the temperature the faster the reaction will be
****if you add a catalyst the reaction rate will increase
Concentration and Rate Laws
A B rate= k[A]
A + B C rate= k[A][B]
Temperature and Rate
As temperature increases, the rate will increase
Collision Model/Depression
***there will be more collisions and more affected ones
Activation Energy
Minimum energy required to initiate a chemical reaction
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