Chapter 10

Question 1

Chemical equilibrium

Answer 1

The point in a chemical reaction at which the rate of the forward reaction equals the rate of the backwards reaction

Question 2

Dynamic equilibrium

Answer 2

Dynamic equilibrium refers to the state in which the concentrations of all reactants and products have reached a steady value while reactions are still occurring. In this state, the rate of reaction of a particular species present equals the rate of its production

Question 3

Explain what is meant by the term ‘dynamic state’ when describing equilibrium

Answer 3

The reaction is still occurring even though the amount of products and reactants remains constant
Reaction has never stopped

Question 4

Q vs K

Answer 4

K is a set number that will be satisfied when the reaction number is at equilibrium, where as Q is a number calculated at any point in time of the reaction that gives an indication of whereabouts the reaction is with respect to equilibrium.
At equilibrium Q=K

Question 5

Le Chatelier’s principle

Answer 5

If an equilibrium system is subjected to a change, the system will adjust itself to partially oppose the effect of the change and reinstate the equilibrium.

E.g. If a reactant is added to a solution at equilibrium, the system will convert some of the reactant to product to reinstate equilibrium