Chemistry 2 - Reversible Reactions And
Equilibrium Questions And Answers
2024/2025 Update
dynamic equilibrium Answer: a condition in a chemical system in which the rates of forward and
reverse reactions are equal
equilibrium Answer: a condition in a system in which all parts of the system are balanced
equilibrium constant Answer: the ratio of the equilibrium concentrations of products raised to their
stoichiometric ratios to the concentrations of reactants raised to their stoichiometric ratios
reversible reaction Answer: a reaction in which neither the forward nor the reverse reaction is
highly favored
Which statement correctly defines dynamic equilibrium? Answer: At dynamic equilibrium, the rates
of forward and reverse reactions are equal.
Which lists all of the substances that appear in equilibrium constant expressions? Answer: pure gas
and aqueous solution
Which statement correctly describes a reaction in dynamic equilibrium? Answer: At dynamic
equilibrium, the reactions continue but the amounts of reactants and products do not change.
In the atmosphere, under the effect of ultraviolet rays, oxygen molecules combine to form ozone
molecules, and ozone molecules also photodissociate to form oxygen molecules. Which of the following
would be observed if this reaction is in dynamic equilibrium? Answer: The rates of the forward and
reverse reactions will remain the same.
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