Chemical Equilibrium

Question 1

Equilibrium

Answer 1

When the forward reaction rate is equal to the reverse reaction rate

Question 2

Law of Mass Action

Answer 2

The rate of a chemical reaction is proportional to the product of the concentrations of the reacting substances

Question 3

If equilibrium constant is large

Answer 3

Equilibrium does not occur until the concentrations of the original reactants are small & those of the products large

Question 4

If equilibrium constant is small

Answer 4

Equilibrium occurs almost at once & relatively little product is produced

Question 5

Le Chateliers Principle

Answer 5

If a stress is placed upon a system in equilibrium, the equilibrium is displaced in the direction that counteracts the effect of the stress

Question 6

Small value of acid dissociation constant

Answer 6

Concentration of un-ionized molecule must be relatively large compared with the ion concentrations

Question 7

Large value for acid dissociation constant

Answer 7

Concentrations of ions are relatively large

The larger the value for ionizaton constant, the stronger the acid

Question 8

Second Law of Thermodynamics

Answer 8

Entropy of the universe increases for any spontaneous process