Dynamic equilibrium

Question 1

What is a reversible reaction?

Answer 1

Reactions that take place in both the forward and reverse directions

Question 2

What is achieved at dynamic equilibrium?

Answer 2

• At equilibrium, the forward and backward reactions occur at the same time
• the concentrations of products and reactants remain unchanged
• this only occurs in a closed system

Question 3

What is le chateilers principle?

Answer 3

-when a system in equilibrium is subjected to external changes, the system will readjust itself to minimise the effects of this change

Question 4

What affects dynamic equilibrium?

Answer 4

• temperature
• pressure
• concentration

Question 5

How does concentration affect dynamic equilibrium

Answer 5

• if the concentration of products increases, equilibrium will shift to the left to minimise this
• the concentration of reactants increases, equilibrium will shift to the right

Question 6

How does temperature affect equilibrium?

Answer 6

• if temperature increases, the equillibrium will shift to favour the endothermic side of the reaction
• if temperature decreases, equilibrium will shift to favour the exothermic side

Question 7

What is the affect of pressure?

Answer 7

• if pressure increases, equilibrium will shift to the side of the reaction with fewer molecules
• if pressure decreases, equilibrium will shift to the side of the reaction with more molecules (more moles)

Question 8

Why does there need to be a compromise in the industry?

Answer 8

• High pressures are expensive and dangerous
• low temperatures slow down rates of reactions, reducing the kinetic energy of particles

Question 9

What do catalysts do?

Answer 9

• catalysts do not change the position of equilibrium but instead increase the rate that equilibrium is acheived