Kp

Question 1

What is partial pressure>

Answer 1

• 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

Question 2

WHat is the total pressure of a gas mxiture?

Answer 2

sum of the partial pressures of the individual gasses

Question 3

What is mole fraction?

Answer 3

• 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

Question 4

How is partial pressure calculated from mole fraction?

Answer 4

• partial pressure of a gas = mole fraction x total pressure of gas in the mixture

Question 5

Write an expression for Kp for the reaction:

aA (g) + bB (g) ⇌ yY (g) + zZ (g)

Answer 5

Question 6

What is the difference between Le Chateliers principle to equilibria in solution in gaseous equilibria?

Answer 6

• pp replaces conc

Question 7

Does pressure affect Kp?

Answer 7

• no
• equilibrium will shift to keep it the same