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18 Cards in this Set
- Front
- Back
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What is the formula for First Order reaction?
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ln [A]t/[A]0= -kt
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What is the formula for Half life in a First Order reaction?
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t 1/2= .693/k
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What is the formula for a Second order reaction?
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1/[A]t= k + 1/[A]0
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What is the formula for Half life in a Second Order reaction?
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t 1/2= .693/k[A]0
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What formulas are used for Equilibrium?
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K= [P]^D/R
K= [C]^C [D]^D/[A]^A [B]^B Kp= Kc [RT]^Δn |
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How is delta n figured?
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Moles of Product - Moles of Reactant
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What is the constant for R?
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.0821
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What does T symbolize in the formula
Kp=Kc[RT]^delta n |
Temperature Kelvin
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What things can increase the speed of a chemical change?
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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 |
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Describe the Le Chatelier's Principle
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If an external stress is applied to a system at chemical equilibrium, the system will adjust to partially offset the stress.
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Chemical Equilibrium
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Rates of forward and reverse reactions are equal and the concentraions of the reactants and products remains constant.
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Kinetics
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Study of the speed of a chemical change
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Substrate
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Substance enzymes act on.
1 enzyme/1 subtrate |
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Rate Constant
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Fractional amount of something undergoing change for a certain amount of time
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Enzyme
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Proteins that act as biological catalysts
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Activation Energy
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Energy that must be inputted to start something off in a reaction.
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What are the two kinds of catalysts?
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Homogeneous Catalyst: Same state of matter as reactant
Heterogeneous Catalyst: Different state of matter than reactant |
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What are the formulas for Equilibrium?
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K= [P]^D/R
K= [C]^C [D]^D/[A]^A [B]^B Kp= Kc [RT]^Δn |
