Chlorine gas (Cl2) is manufactured by reacting HCl and O2. To ensure maximum product yield,
air (21 mole% O2, 79% N2) is fed in excess to provide 50% excess oxygen. If the fractional
conversion of 100 mol HCl fed to the reactor is 0.85,
a) Calculate the mole of the product stream components, using atomic species balances.

b) Calculate the mole of the product stream components, using extent of reaction