Dynamic Equilibrium

Question 1

What happens at equilibrium

Answer 1

There in no tendency for a further change to occur

Question 2

What happens at static equilibrium

Answer 2

A change occurs and the system is at equilibrium

Question 3

What happens when a system is a dynamic equilibrium

Answer 3

There is equal change in either direction

Question 4

Describe an example of s system at dynamic equilibrium

Answer 4

Br2(l) Br2(g)

Equal rates of evaporation and condensation

Question 5

What is a chemical example of dynamic equilibrium called and give an example

Answer 5

It is called solubilisation.

E.g. PbCl2(s) PbCl2(aq)

Question 6

With solubilisation at dynamic equilibrium at what level does exchange occur

Answer 6

Exchange occurs at molecular level

Question 7

In which system can an equilibrium exist

Answer 7

Dynamic equilibrium exists only in a closed system

Question 8

Describe dynamic equilibrium in terms of macroscopic properties

Answer 8

Macroscopic properties are constant (for given T, P and initial concentrations

Question 9

Why does no net change occur when a system is at dynamic equilibrium

Answer 9

Processes on a molecular scale are in balance, therefore no net change occurs

Question 10

Where can dynamic equilibrium be obtained from

Answer 10

Equilibrium can be obtained from either side of the equation