C11 Reversible Reactions

Question 1

What is meant by the term equilibrium?

Answer 1

The concentration of products and reactants reaches a balance and stops changing.

Question 2

Why do reversible reactions reach equilibrium?

Answer 2

The forward and backward reactions are occuring at the same rate.

Question 3

If the equilibrium position lies to the right, there is a greater concentration of ………

Answer 3

Products

Question 4

T or F- If a reversible reaction is exothermic in one direction, it will also be exothermic in the other.

Answer 4

False- it would be endothermic

[also if that was true if might violate energy conservation i think maybe]

Question 5

Summarise Le Chatelier’s principle:

Answer 5

If the conditions of a reversible reaction are altered, the system will attempt to counteract the change.

Question 6

What happens to a reversible reaction if the temperature is increased?

Answer 6

The yield of the endothermic reaction will increase.

Question 7

What happens when the pressure is increased?

Answer 7

The yield of the reaction which produces fewer gas molecules increases.

Question 8

What happens if you decrease the product concentration?

Answer 8

The reactant concentration will decrease