CHEMICAL EQUILIBRIUM Flashcards
1
Q
How to write equilibrium constant formula
A
keq =[C][D]/[A][B] = [product]/[reactant]
do not include (s) or (l)
2
Q
kc unit
A
mol/L
3
Q
kp unit
A
bar
4
Q
K trends (3)
A
- K>1 (forward reaction products favored)
- K<1 (reverse reaction reactants favored)
- K = 1 (neither reactions favored)
5
Q
Q trends (3)
A
- Q<K (reaction proceed to products to reach equilibrium)
- Q = K (reaction at equilibrium)
- Q>K (reaction proceed to reactants to reach equilibrium)
6
Q
How do you find Q (reaction quotient)
A
Solve the same way as K
7
Q
ICE Table
A
I: Initial concentration or 0 on one side
2. C: -coef X on reactant, +coef X on product
3. E: add I+C and solve for x
8
Q
Small x approximation
A
- Use when you have small k, large initial concentration
- Ignore or omit any added/subtracted x’s
- Confirm with x/initial x100 and should be <5%
9
Q
Using a quadratics formula, which value do you take x1/x2?
A
It doesn’t matter but take whichever one is positive since one will be negative
10
Q
Adding reactant
A
Shift right
11
Q
Removing reactant
A
Shift left
12
Q
Adding product
A
Shift left
13
Q
Removing product
A
Shift right
14
Q
Adding/removing gas thats not inert (noble gas)
A
Shift to side with less gas
15
Q
Pressure ↑, volume ↓
A
Shift to side with less gas
