Chemistry

Problem

For the equilibrium

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

K_c = 0.25

at 350 K. A 2.0 L flask is charged with 0.40 mol of NO

_2

and 0.10 mol of N

_2

_4

. What is the equilibrium concentration of NO

_2

? a)

0.22\,\text{M}

0.18\,\text{M}

0.14\,\text{M}

0.15\,\text{M}