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18 Cards in this Set

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  • Back
What is the formula for First Order reaction?
ln [A]t/[A]0= -kt
What is the formula for Half life in a First Order reaction?
t 1/2= .693/k
What is the formula for a Second order reaction?
1/[A]t= k + 1/[A]0
What is the formula for Half life in a Second Order reaction?
t 1/2= .693/k[A]0
What formulas are used for Equilibrium?
K= [P]^D/R

K= [C]^C [D]^D/[A]^A [B]^B

Kp= Kc [RT]^Δn
How is delta n figured?
Moles of Product - Moles of Reactant
What is the constant for R?
What does T symbolize in the formula

Kp=Kc[RT]^delta n
Temperature Kelvin
What things can increase the speed of a chemical change?
HIGH CONCENTRATION: more reactants available
PRESSURE: Increases concentration and packs molecules together
TEMPERATURE: Increase the speed of molecules
PARTICLE SIZE: Surface area increases
CATALYST: Has ability to promote change without being used up
STATE OF MATTER: Speed of molecules effect change
DISSOLVED IN SOLUTION: Particle size = molecule size
WHAT IT IS REACTING WITH: some are very reacting and some are not
Describe the Le Chatelier's Principle
If an external stress is applied to a system at chemical equilibrium, the system will adjust to partially offset the stress.
Chemical Equilibrium
Rates of forward and reverse reactions are equal and the concentraions of the reactants and products remains constant.
Study of the speed of a chemical change
Substance enzymes act on.

1 enzyme/1 subtrate
Rate Constant
Fractional amount of something undergoing change for a certain amount of time
Proteins that act as biological catalysts
Activation Energy
Energy that must be inputted to start something off in a reaction.
What are the two kinds of catalysts?
Homogeneous Catalyst: Same state of matter as reactant

Heterogeneous Catalyst: Different state of matter than reactant
What are the formulas for Equilibrium?
K= [P]^D/R

K= [C]^C [D]^D/[A]^A [B]^B

Kp= Kc [RT]^Δn