Gaseous Equilibria
No description yet. This curated deck is ready for daily study.
Card preview (12)
What is a total system pressure made up of?
Each gases individual partial pressure
What are partial pressures commonly measured in?
Pascals
How to calculate Kp
Same to Kc but divide each species by total moles
Mole fraction of a gas equation
Gas moles / all moles of gas in mixture
Partial pressure equation
Mole fraction of a gas x total pressure in mixture
Effect on temperature on Kp
Changing the temperature alters the equilibrium pressure and so Kp
What happens to Kp if it’s shifted right or left in an exothermic reaction?
Right: Temp increases Left: Temp decreases
How does pressure impact Kp
No effect
How does a catalyst impact Kp
No overall effect as only speeds up how quickly Kp is established
What is Kp
The equilibrium constant calculated from partial pressures for a system at constant temperature
Kp equation and units of 3H2(g) + N2(g) ⇌ 2NH3(g)
Kp = (pNH3)^2 / ((pH2)^3 x pN2) p x p / p x p x p x p = p^-2
Is it possible for there to be no units for Kp?
Yes