Question

2NO2(g) Equilibrium N2O4(g)

NO2 and N2O4 undergo the reaction shown. When a sealed container of NO2 reaches chemical equilibrium, which must be true?
f The maximum number of molecules has been reached.
g No N2O4 is present.
h The rates of the forward and reverse reactions are equal.
j No chemical reactions are occurring.

Answer 1

h The rates of the forward and reverse reaction are equal.

Step-by-step explanation:

The reaction takes place in a closed container . So both the reactant (NO₂) and product N₂O₄ are present in the reaction container. Under such conditions, the reaction reaches chemical equilibrium. At chemical equilibrium the rates of the forward and reverse reactions are equal. The concentration of the reactants and products remain constant at Chemical Equilbrium.