Unit 22 - General Equilibrium
Terms in this set (25)
a process which is able to travel both forward and backward. Ex. dissolving.
a process which is generally one-way, forward. Ex. combustion.
the point at which a reaction's forward and reverse reaction rates are equal.
never stopping, a form of equilibrium.
the rate constant for the forward reaction.
the rate constant for the reverse reaction.
the equilibrium constant, a ratio of k / k'.
a mathematical expression in which the concentrations/pressures of the products are divided by those of the reactants. Equal to K.
the equilibrium constant for aqueous reactions based on the molarities of the reactants and products.
equilibrium constant for gas-phase reactions based on partial pressures of reactants and products
Law of Mass Action
states that the equilibrium expression can be written as the [Products] / [Reactants] raised to the power of their coefficients in the balanced equation.
an equilibrium involving reactants and/or products in more than one phase
a state of equilibrium that occurs when all the reactants and products of a reaction are in the same physical state
the size of a value, always positive. When describing K, generally shows which side of the reaction is favored.
reaction, initial, change, equilibrium. A graphic organizer used to track changes in reactant and product [ ] or P over time.
a value which is so small when compared to another that it can be disregarded.
when a stress is applied to a system at equilibrium, the equilibrium shifts to relieve the stress
describes a reaction which absorbs energy from the surroundings.
a reaction which releases energy to its surroundings.
a substance which increases both the forward and reverse reactions, helping establish equilibrium very rapidly. Not consumed, doesn't influence equilibrium [ ]s.
non-reactive, ex. noble gases.
Q, a value which is compared to K in order to determine the direction a reaction will shift in order to establish equilibrium.
Q > K
too much product, equilibrium shifts left.
Q = K
indicates a reaction is already at equilibrium.
Q < K
too much reactant, equilibrium shifts right.
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