CHEM EXAM 2 Flashcards
→how fast does a reaction proceed?
studies the rate at which a chemical process/reaction occur
also sheds light on the reaction mechanism (how the reaction occurs)
Kinetics
→does a reaction takes place
Thermodynamics
FACTORS THAT AFFECT REACTION RATE
-reactant concentration
temperature
action of catalysts
*surface area
How we measure rates
Reaction Rates
How long it rakes to react 50% of reactants.
Half-Life
How the rate depends on amounts of reactants
Rate Laws
How to calculate amount left or time to reach a given amount
Integrated rate Laws
How rate constant changes with temperature
Arrhenius equation
Link between rate and molecular scale. processes
Mechanisms
as product accumulates, they can begin to turn back into reactants
Reversible Reactions
when 2 chemicals react, their molecules have to collide with each other (in a particular orientation)
Collision Theory
increasing temperature means the molecules move faster.
Kinetic Theory
*more area for reactants to be in contact
Surface Area of a Solid Reactant
as the concentration of reactants increases, so does the likelihood that the reactant molecules will collide
Concentration of Reactants
speed up reactions by lowering activation energy
Catalysts
