Equilibria Flashcards
1
Q
Define dynamic equilibrium
A
- Rate forward reaction = rate backward reaction
- Conc R + P are constant
- Closed system
2
Q
State Le Chatelier’s principle
A
If any factor is changed which affects equilibrium, the position of equilibrium will shift to counteract the change
3
Q
What happens when you inc the conc of reactants?
A
- Equil shifts RHS to get rid of extra reactants
- Produces more products
- Opposes inc in reactants
4
Q
What happens when you dec the conc of products?
A
- Equil shifts to RHS
- Produces more products
- Opposes dec in products
5
Q
What happens when you inc the pressure?
A
- Equil shifts to side w/ least no. gaseous moles
- Opposes inc in pressure
6
Q
What happens when you dec the pressure?
A
- Equil shifts to side w/ most no. gaseous moles
- Opposes dec in pressure
7
Q
What happens when you inc the temp?
A
- Equil shifts in endo direction
- Oppose inc in temp
8
Q
What happens when you dec the temp?
A
- Equil shifts to exo direction
- Opposes dec in temp
9
Q
What happens to the position of equilibrium when you add a catalyst?
A
- No effect on position
- No effect on yield
- Equil is reached faster
10
Q
What is the equation for Kc?
A
Kc = [Products] / [Reactants]
11
Q
What is the only thing that affects the value of Kc?
A
Temperature
12
Q
If temp inc what happens to Kc?
A
Kc dec
