Chemistry

Problem

The endothermic equilibrium

\text{N}_2\text{O}_4(g)\rightleftharpoons 2\text{NO}_2(g)

is established at

350\,\text{K}

. Initial equilibrium concentrations are

[\text{N}_2\text{O}_4]=0.020\,\text{M}

and

[\text{NO}_2]=0.040\,\text{M}

. After a single disturbance, the system reaches a new equilibrium with

[\text{N}_2\text{O}_4]=0.015\,\text{M}

and

[\text{NO}_2]=0.050\,\text{M}

. Which change is most consistent with these observations? a) Some

\text{NO}_2(g)

was removed from the vessel b) The temperature of the system was increased c) Additional

\text{N}_2\text{O}_4(g)

was injected into the vessel d) The volume of the container was increased at constant temperature