An equilibrium mixture of gases in a rigid

CHEMISTRY · Single correct · AP · Chemistry · Equilibrium · Equilibrium

Problem

An equilibrium mixture of gases in a rigid, sealed container at constant temperature is described by the reaction

\text{N}_2(g) + 3\,\text{H}_2(g) \rightleftharpoons 2\,\text{NH}_3(g).

Which of the following changes would alter neither the value of the equilibrium constant

K_c

nor the position of equilibrium? (a) Compressing the mixture to one-half of its original volume (b) Injecting additional

\text{N}_2(g)

into the vessel (c) Introducing a finely divided iron catalyst into the mixture (d) Raising the temperature of the container by

25\,^{\circ}\text{C}