Topic 7: equilibrium

Question 1

What is dynamic equilibrium

Answer 1

In a closed system , Concentration constant and rate of reaction constant and equal for forward and reverse reactions

Question 2

Types of equilibrium systems

Answer 2

Chemical reaction
phase
solubility

Question 3

Magnitude of equilibrium constant

Answer 3

Kc&raquo_space; 1 - reaction going nearly to completion
Kc &laquo_space;1 - reaction hardly proceeds
10 ^-2 < Kc < 10^2 - both reactants and products present in noticeable amounts

Question 4

Le chateliers principle

Answer 4

if a system at equilibrium is subjected to a small change the equilibrium tends to
shift so as to minimize the effect of the change.

Question 5

Factors affecting position of equilibrium

Answer 5

Change in concentration
- shift to side with less concentration
Change in temperature
- shift to side depending on endo or exo
Change in pressure
- shift to side with more or less moles of gas
Adding a catalyst
- increase the rate at which eq is reached, no affect on position