Write the equilibrium expression and calculate the $K_{eq}$ for $4H_2(g)+C{S}_2(g)C{H}_4(g)+2H_{2}S(g)$

Concentrations at equilibrium:

$[C{H}_4]=[H_2(S)]=1\mathrm{.}3{10}^{-2}mo\frac{l}{L}$

$[H_2]=4\mathrm{.}4{10}^{-1}mo\frac{l}{L}$

$[C{S}_2]=1\mathrm{.}1{10}^{-3}mo\frac{l}{L}$