Kp Flashcards
1
Q
What is partial pressure>
A
- in a mixture of gases, each gas exerts its own pressure
- this is its partial pressure
- pressure the gas would exert if it was on its own
2
Q
WHat is the total pressure of a gas mxiture?
A
sum of the partial pressures of the individual gasses
3
Q
What is mole fraction?
A
- a ‘mole fraction’ is the proportion of a gas mixture that is made up of a mixture of gas
- number of moles of gas A / total number of moles of gas
4
Q
How is partial pressure calculated from mole fraction?
A
- partial pressure of a gas = mole fraction x total pressure of gas in the mixture
5
Q
Write an expression for Kp for the reaction:
aA (g) + bB (g) ⇌ yY (g) + zZ (g)
A
6
Q
What is the difference between Le Chateliers principle to equilibria in solution in gaseous equilibria?
A
- pp replaces conc
7
Q
Does pressure affect Kp?
A
- no
- equilibrium will shift to keep it the same
