Chemistry

Problem

At 350\,K the following equilibrium is established in a rigid 2.00\,L vessel:

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

The vessel is initially charged with 0.200\,mol of

\mathrm{N_2O_4}

and no

\mathrm{NO_2}

. When equilibrium is reached, 0.0400\,mol of

\mathrm{N_2O_4}

remain. Calculate the equilibrium constant

K_c

at 350\,K.