Equilibrium Constant Flashcards
1
Q
What is the Equilibrium Constant (Kc)
A
- used to show the relationship between the concentration of products and reactants at equilibrium
- used to determine which direction a reaction will proceed to reach equilibrium
Kc = (products)^a / (reactants)^b
2
Q
What is favoured with EqC
A
- if Kc > 10^4 –> eq. mixture contains a lot of products
- if Kc < 10^4 –> eq. mixture contains a lot of reactants
3
Q
Change in temperature on Kc
A
Endothermic
- increase in temp –> decrease on Kc
Exothermic
- decrease in temp –> increase on Kc
4
Q
Reaction Quotient (Qc)
A
- shows the relationship between the concentrations of products/reactants during any stage of reaction
- calculated like Kc
- if Q > K –> reverse reaction preferred until eq. reached –> favours reactants
- if Q < K –> forward reaction preferred until eq. reached –> favours products