Two gases, water vapor $(H_{2}O)$ and carbondioxide $(C{O}_2),$ are stored in a tube at constant pressure of $100$kPa and temperature of $307K.$ The tube is $0\mathrm{.}05m$ long as shown in the figure belowe The partial pressure of $H_{2}O$ at point $1$ is $p_{A_1}=60$kPa and at point $2$ is $p_{A2}=25$kPa

If the total pressure is constant throughout the tube, calculate the flux of $C{O}_2$ at steady$-$state for equimolar counter$-$diffusion.