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Equilibrium

CHEM 205

QuestionAnswer
_____ is the state in which the concentrations of all reactants and products remain constant over time. chemical equilibrium
Any chemical reaction in a ____ system will eventually reach chemical equilibrium. closed
When the reaction lies to the right, it favors a high concentration of... products
When the reaction lies to the left, it favor a high concentration of... reactants
The rate at which reactions can proceed is determined by... the concentration of it's reactants
As a system approaches equilibrium, the rate of the forward reaction will... decrease
As a system approaches equilibrium, the rate of the reverse reaction will increase
The equilibrium position is determined by (3 things) initial concentrations, relative energies, relative degree of organization
There are two reasons why a system might appear unreactive: equilibrium or undetectably slow reaction rates
_____ and _____ proposed the law of mass action to describe equilibrium. Guldberg and Waage
K represents the equilibrium constant
When writing the equilibrium expression, it is always ___ over ____ products over reactants
The K value of the forward reaction is the _____ of the K value of the reverse reaction reciprocal
If all the concentrations in the equation are multiplied by n, the the k value is... raised to the power of n
When K > 1, the reaction favors the... products
When K < 1, the reaction favors the... reactants
Kc =Kp when the sum of the coefficients on either side is... identical
delta n is the sum of... the coefficients of the gaseous products minus the sum of the coefficients of the gaseous reactants
_____ always cause the units of the equilibrium expression to cancel reference states
Activity is a ratio of ____ concentration/pressure values to _____ concentration/pressure values within an equilibrium expression measured reference
_____ and _____ have absolutely no effect on the equilibrium position of a heterogeneous system solids liquids
Therefore, solids and liquids must be... left out of equilibrium expressions
In an equilibrium expression, only ____ and ____ species should be taken into consideration. gaseous aqueous
The activity of solids and liquids is equal to 1
Knowing the equilibrium constant helps to predict the... probability of a reaction occurring
Knowing the equilibrium constant DOES NOT help to predict the... speed of a reaction if it occurs
The ____ is like a test K, where you plug in numbers to see if you've reached equilibrium. reaction quotient
Q represents the reaction quotient
Q = K system is at equilibrium
Q > K shift to left (too many products)
Q < K shift to right (too many reactants
_____ says that if a change in conditions is imposed on a system at equilibrium, the equilibrium position will shift in a direction that reduces the change. Le Chatelier Principle
Adding an inert gas at constant volume has no effect on... Equilibrium
If the volume of a container is reduced, the system shifts to whichever side of the equation... has the smallest number of moles of gas
With temperature changes at equilibrium, think of heat as... a product or reactant
The only change that can actually affect K is a change in temperature
You generally don't have to correct for nonideal gas behavior if you aren't at extreme pressure
The calculated Kp will usually be within ___% of the actual value even if it's not corrected for nonideal gas behavior. 1%
Created by: kadevitt
 

 



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