Chemistry

Problem

A sealed vessel initially contains

[\text{N}_2]=1.00\,\text{M}

[\text{H}_2]=1.50\,\text{M}

, and no

\text{NH}_3

. After the system reaches equilibrium at a certain temperature, the concentration of

\text{NH}_3

is found to be

0.40\,\text{M}

for the reaction

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

What is the value of the equilibrium constant

K_c

at this temperature? a) 0.69 b) 0.27 c) 3.6 d) 0.22