The Equilibrium Constant
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Chemists want to determine the concentration of each of the products and reactants at _
Any time during an equilibrium reaction
Ratio or products to reactants in an equilibrium system is called the _
Equilibrium constant, k
The equilibrium constant is the mathematical expression of the Law of _
Mass Action
Law of Mass Action states that for a reversible reaction at a constant temp,
Ratio of reactant to product concentrations has a constant value, k
There are different equilibrium constants for different _
Reactions
Ka =
Acid dissociation constant
Kb =
Base dissociation constant
Ion constant for water symbol
Kw
In _ all reacting species are in the same phase
Homogenous equilibrium
No _ in k expressions (2)
Solids Liquids
Because equilibrium reactions are reversible, chemists want to know _
Which side of reaction is favored
Chemists need to know if reaction proceeds towards product or _
Will it favor the reactants
K is _ and helps answer what direction reaction proceeds
Equilibrium constant
K predicts a point of equilibrium where rate of _ are equal (2)
Forward reactions Reverse reactions
The _ tells you, given initial concentration of reactants and products…
Reactant quotient (Q)
The reaction quotient tells you how the reaction will _
Proceed toward equilibrium
Q measures the equilibrium constant for any given point in the reaction and _
Tells whether the reaction is complete or not
Q is the _
Reaction quotient
Q concentrations are all _ concentrations, k are equilibrium concentrations
Initial
Q is like a _ in time of k
Snap shot
If Q > K, reaction proceeds towards _
The reactant
When reaction proceeds towards reactant _
System shifts left ⬅️ to make more reactants
If Q < K, reactant proceeds towards _
Product
When reaction proceeds towards product _
The system shifts right ➡️ to make more products