For the reaction, N2O4(g) 2NO2(g), which of the following statements is true about this reaction at equilibrium?
a. The concentration of NO2 is equal to the concentration of N2O4
b. The rate of the dissociation of N2O4 is equal to the rate of formation of N2O4
c. The rate constant for the forward reaction is equal to the rate constant for the reverse reaction
d. The concentration of NO2 divided by the concentration of N2O4 is equal to a constant
e. Two of the above
Answer: b. The rate of the dissociation of N2O4 is equal to the rate of formation of N2O4