For the reaction

$F{e}_2{O}_3(s)+3H_2(g)2Fe(s)+3H_{2}O(g)$

$H=98\mathrm{.}8kJ$ and $S=143\frac{J}{K}$

The equilibrium constant for this reaction at $270\mathrm{.}0K$ is

Assume that $H$ and $S$ are independent of temperature.