19 Equilibrium Flashcards
What main 2 types is equilibria divided into?
Homogenous and heterogenous
What is homogenous equilibrium?
Homogenous equilibrium is an equilibrium in which all the species making up the reactants and products have the same physical state.
What is heterogenous equilibrium?
Heterogenous equilibrium is an equilibrium in which the species making up the reactants and products have different physical states.
What is the mole fraction?
(Number of moles of A)/(Total number of moles in gas mixture)
How do you calculate partial pressure?
mole fraction of A * total pressure
What does the value of K give?
The value of K gives the exact position of the equilibrium.
What does K=1 indicate?
K=1 indicates an equilibrium halfway between reactants and products.
What does K=100 indicate?
K=100 indicates an equilibrium well in favour of the products.
What does K=1*10^-2 indicate?
K= 1*10^-2 indicates an equilibrium well in favour of the reactants.
What effect does increasing temperature have on the equilibrium constant? (EXOTHERMIC)
The equilibrium constant DECREASES
What effect does increasing temperature have on the equilibrium constant? (ENDOTHERMIC)
The equilibrium constant INCREASES
What effect do changes in concentration or pressure have on the value of equilibrium constant?
The value of an equilibrium constant K is unaffected by changes in concentration or pressure.
How does a catalyst affect equilibrium constant?
- Catalysts affect the rate of a chemical reaction but not the position of equilibrium.
- Catalysts speed up both the forward and reverse reactions in the equilibrium by the same factor.
