14.1 Chemical Equilibrium

Question 1

Define equilibrium. Give 2 examples of a dynamic equilibrium

Answer 1

A state in which here are no observable changes as time goes by

Vaporization of water in a closed container
Formation of ammonia by Haber’s process

Question 2

Explain the difference between physical equilibrium and chemical equilibrium

Answer 2

Physical: when a substance is between two phase changes

Chemical: when the rate of forward reaction is equal to rate of backward reaction

Question 3

What is the law of mass action

Answer 3

For a reversible reaction at equilibrium and a constant temperature a certain ration of reactant and product concentration has a constant value k

Question 4

Briefly describe the importance of equilibrium in the study of chemical reactions

Answer 4

Equilibrium constants are the key to solve a wide variety of stochio problems