ii$)$ In a desulphurization unit of natural gas $H_{2}S$ is adsorbed on ZnO bed, $H_{2}S$ adsorbed on ZnO bed as $0\mathrm{.}25k\frac{g}{k}g$ of ZnO at partial pressure $\frac{20}{b}ar(k\frac{g}{c}{m}^2)$ and $0\mathrm{.}85kgH{H}_2\frac{S}{k}$gZnO at partial pressure $200k\frac{g}{c}{m}^2.$ Assuming Langmuir isotherm applicable, find the amount of $H_{2}S($in $kg)$ adsorbed on $100$kgZnO bed at partia pressure $50k\frac{g}{c}{m}^2.$