Current Attempt in Progress

In the Deacon process for the manufacture of chlorine, $HCl$ and $O_2$ react to form $C{l}_2$ and $H_{2}O.$ Sufficient air mole $\%O_2,79\mathrm{.}0\%N_2)$ is fed to provide $20\mathrm{.}0\%$ excess oxygen and the fractional conversion of $HCl$ is $70\mathrm{.}0\%.$

a$.$ Calculate the mole fractions of the product stream components using atomic species balances in your calculation.

b$.$ Again calculate the mole fractions of the product stream components using the extent of reaction and stoichiometric coefficients in the calculation for the conditions of $25\mathrm{.}0\%$ excess oxygen and a fractional conversion of $HCl$ of $75\mathrm{.}0\%.$