Question 7 (5 points)

Question

Which statements below are TRUE of a chemical reaction that has reached equilibrium?

Choose the 5 correct statements.

a
A reaction can only reach equilibrium in a closed system.
b
A reaction can reach equilibrium in an open system.
c
Irreversible reactions can only reach equilibrium.
d
Reversible reactions can only reach equilibrium.
e
At equilibrium, the rate of the forward reaction is greater than the rate of the reverse reaction.
f
At equilibrium, the rate of the forward and reverse reaction are equal.
g
At equilibrium, the rate of the reverse reaction is greater than the rate of the forward reaction.
h
Macroscopic properties (properties that can be observed with the eye) are constant. It appears as if nothing is happening.
i
Macroscopic properties (properties that can be observed with the eye) are changing.
j
At equilibrium, the concentrations of the reactants and products are constant.
k
At equilibrium, the concentrations of the reactants and products are equal.

Answer 1

The correct statements are:

b. A reaction can reach equilibrium in an open system.
f. At equilibrium, the rate of the forward and reverse reaction are equal.
h. Macroscopic properties (properties that can be observed with the eye) are constant. It appears as if nothing is happening.
j. At equilibrium, the concentrations of the reactants and products are constant.
k. At equilibrium, the concentrations of the reactants and products are equal.