At 298 K the dimerization of nitrogen dioxide is represented by 2 NO_2(g) N_2O_4(g) with

CHEMISTRY · Single correct · A Level · Chemistry · Gaseous equilibria (Kp) · Gaseous equilibria (Kp)

Problem

At 298 K the dimerization of nitrogen dioxide is represented by

2\mathrm{NO_2(g)}\rightleftharpoons\mathrm{N_2O_4(g)}

with

K_p=0.15

. A 2.0 L rigid container is filled with 0.40 mol of

\mathrm{NO_2}

and no

\mathrm{N_2O_4}

. Which species will have the greater number of moles at equilibrium? (a) The two species will be present in approximately equal amounts (b)

\mathrm{N_2O_4}

(c)

\mathrm{NO_2}

(d) The information is insufficient to predict which species predominates