How far?

Question 1

Definition of Le Chatelier’s principle

Answer 1

When any of the conditions affecting the position of a dynamic equilibrium are changed, the position of the equilibrium will shift to minmise that change.

Question 2

What are the key characteristics of a dynamic equilibrium?

Answer 2

1. The system is closed.
2. Forwards and reverse reaction occur at the same rate.
3. The concentrations of reactants and products remain constant.

Question 3

What is a homogenous reaction?

Answer 3

A reaction in which the reactants and products are in the same state.

Question 4

What is a heterogenous reaction?

Answer 4

A reaction in which the reactants and products are in different states.

Question 5

Which factor affects the value of Kc and Kp?

Answer 5

Temperature ONLY

Question 6

What effect does increasing the pressure have on cenoncentration?

Answer 6

Concentration increases for all substances.

Question 7

Definition of partial pressure

Answer 7

mole fraction x total pressure

Question 8

Definition of mole fraction

Answer 8

(Moles of individual gas) / (Total moles of all gases)

Question 9

State the method to calculate Kp

Answer 9

1. Calculate the mole fraction for each gas in the equation.
2. Calculate the partial pressure

Question 10

What state must chemicals be in Kp expressions?

Answer 10

Gaseous