3c

Question 1

Reversible reaction symbol

Answer 1

⇌

Question 2

Dynamic equilibrium

Answer 2

• Forward and reverse rates of reaction become constant
• Reactant and product concentration become constant
• Can occur in reversible reaction if container is sealed

Question 3

Catalyst

Answer 3

• Changes Ea in both directions
• Allows reaction to reach equilibrium faster
• Does not favour either side

Question 4

Changing temperature

Answer 4

• Increasing temperature favours endothermic reaction
• Decreasing temperature favours exothermic reaction

Question 5

Changing pressure

Answer 5

• If reactants have more gas particles, increasing pressure favours the forward reaction
• If reactants have fewer fas particles, increasing pressure favours the reverse reaction