Chemistry

Problem

At 350\,K a 1.0\,L flask initially contains 0.500\,mol of

\mathrm{N_2O_4(g)}

and no

\mathrm{NO_2(g)}

. The system reaches equilibrium according to

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

with

K_c = 0.36

. What percentage of the original

\mathrm{N_2O_4}

has dissociated at equilibrium? a) 42\% b) 34\% c) 17\% d) 68\%