Chemical Equilivrium Flashcards
What is dynamic equilibrium how is it established
A state where no net change occurs bc forward and reverse reaction occur at same rate
The reaction occurs in both directions
What do we say about equilibrium if products are favoured
If reactants are favour
Lies to the right
Lies to the left
What is Kc in the equilibrium constant equation.
What is it independent of
Equilibrium constant, only use if concentrations are equilibrium values
Independent of starting conditions, varies with temp
What is Qc in the reaction quotient
When can we use it
The reaction quotient
Used when we have just regular non equilibrium concentrations or equilibrium concentrations
What does Qc equal at equilibrium
Kc
What is Qp and Kp
Reaction quotient for gasses
Equilibrium constant for gasses
What is a heterogenous equation
Equation with gasses and aq
Just write K
What are effective concentration and pressures?
When pressure is p/ 1 atm or bar
When concentration is C/1M
Used in K expressions
What is the q value dependent on
Concentration or partial pressures (amount dependent)
What is K dependent on
Temperature
What is favoured if K is large
> > > > 1
Products
What is favoured if k is small
«««1
Reactants
If Q<k
Q>k
Q=K
Forward reaction procceeds, products favoured
Reverse
Equilibrium (no net change)
If the reaction of reversed (reactants are made, products used up) what happens to K
It’s become 1/K
How to calc K if reactions are added together to make overall reaction
Multiply all individual k values of each reactions (not including overall. Rxn)
