Equilibrium II

Question 1

What is Kp calculated in terms of

Answer 1

partial pressure

Question 2

What is partial pressure

Answer 2

the pressure than an individual gas exerts on the container it is in

Question 3

What is the equation for partial pressure

Answer 3

mole fraction x total pressure

Question 4

What is the equation for mole fraction

Answer 4

moles of an individual gas / total moles of all gas

Question 5

Give three conditions that affect Kp

Answer 5

1) temperature
2) partial pressure of one gas
3) total pressure of system

Question 6

What effect does temperature have on the value of Kc

Answer 6

increase in temperature
equilibrium shifts left/right in the endothermic direction
Kp numerator / denominator increases
so Kp increases / decreases

Question 7

What effect does the partial pressure of a specific gas have on the value of Kc

Answer 7

increase in the concentration of [X]
Kp remains constant
denominator / numberator of Q increases, so Q increases / decreases
so equilibrium shifts left / right to restore Q to equal Kc

Question 8

How does a change in the total pressure in a system effect the value of Kc

Answer 8

increasing pressure will shift equilibrium right / left to the side with fewer moles
Kp remains constant

Question 9

Describe how to calculate how changing the total pressure of a system effects the value of Kc

Answer 9

1) give each component of the Kc equation a letter
2) replace every letter in Q with the multiplication factor and apply powers from original equation
3) rearrange and find whether numerator / denominator increases

• if numerator increases, equilibrium shifts left to restore Q = Kc
• if denominator increases, equilibrium shifts right to restore Q = Kc