Chemistry

Problem

For the gaseous reaction

\text{X}_2(g) \rightleftharpoons 2\,\text{Y}(g)

at 298 K, the standard free-energy change is

\Delta G^{\circ}=-12\,\text{kJ}\,\text{mol}^{-1}

. Which value is closest to the equilibrium constant

K

at this temperature? a)

5\times10^{-3}

1\times10^{2}

6\times10^{-1}

7\times10^{4}