Chemistry

Problem

1.0\,\text{L}

flask at 700 K initially contains

0.500\,\text{M}

\text{H}_2(g)

and

0.500\,\text{M}

\text{I}_2(g)

with no

\text{HI}(g)

. After the system reaches equilibrium for the reaction

\text{H}_2(g) + \text{I}_2(g) \rightleftharpoons 2\text{HI}(g)

the concentration of

\text{HI}

is found to be

0.600\,\text{M}

. What is the value of

K_c

at 700 K? a) 4.5 b) 0.11 c) 9.0 d) 15