13.1 Equilibrium and Equilibrium Constants
Equilibrium Constants (Law of Mass Action)
| Equilibrium Constants | |
|---|---|
| K>>1 | Favors Products |
| K<<1 | Favors Reactants |
| 10-3 < K < 103 | Reactants and products both present at equilibrium |
2C(s) + O2(g) ⇌ 2CO(g)
What is the equilibrium constant expression for the reaction above?
Equilibrium constants are CONSTANTS. The constant will only change with a change in temperature.
Kp vs Kc
Kp = Kc (RT)Δn Δn = change in moles gas R = 0.0821 L • atm / mol • K
2SO2 + O2 ⇌ 2SO3 Kc = 278
Based on the reaction above, what are the equilibrium constants for the following reactions?
2SO3 ⇌ 2SO2 + O2
SO2 + ½O2 ⇌ SO3
SO3 ⇌ SO2 + ½O2