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21 Cards in this Set

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  • Back
These compounds do not spontaneously react at room temperature.
thermodynamically stable
a reaction in which the products turn back into the original reactants
reversible reaction
What 5 factors affect reaction rates?
temperature, concentration, nature of reactants (ionic, covalent), catalysts and inhibitors, surface area
These reactions do react spontaneously but at a rate so slow that it is undetectable.
kinetically stable
the energy required to form an activated complex
activation energy
a temporary compund formed by the coming together of high energy reactants
activated complex
the process of increasing reaction rates by using a catalyst
catalysis
An inhibitor slows down the reaction by decreasing the __________ of that reactant.
concentration
The reaction between __________ compounds take longer than reactions between _________ substances in a solution.
covalent, ionic
A reaction in which the reactants are forming products at the same rate the products are turning back into the reactions is said to be in ____________.
equilibrium
a substance that speeds up a reaction without itself being permanently changed by the reaction
catalyst
Catalysts work by ________________________.
lowering the required activation energy of a reaction.
Reaction in which all the reactants are in the same phase
homogeneous reactions
Homogeneous catalysts are in the _______ phase as the reactants and become part of the _______________.
same, reactants
True/False: When the activated complex breaks up into products, the homogeneous catalyst returns changed.
False--it is unchanged
An inhibitos forms a permanent bond with one of the ________, making it useless.
reactants
Le Chatelier's Principle states that when a reaction at equilibrium is placed under stress, the reaction will___________________.
Shift to establish a new equilibrium
Pressure changes only affect ________.
Gases
As pressure is increased, the ____________ of a gas increases.
concentration
When pressure of a gas is increased and the concentration increases, equilibrium will shift toward which side of the reaction?
The side with the fewest moles of gases.
If the equilibrium constant is greater than 1, then there is more __________ at equilibruim and the _________ reaction is favored.
product, forward