The following reaction is at equilibrium

$H_2(g)+C{O}_2(g)H_{2}O(g)+CO(g)$

a$.$ Determine the free energy change, $G,$ at $T=298K.$

b$.$ If the partial pressures of $H_2(g),C{O}_2(g),H_{2}O(g),$ and $CO(g)$ are $20,40,0\mathrm{.}04,$ and $0\mathrm{.}02$atm,

respectively, determine the free energy change as a function of temperature, $G(T).$