A packed tower is used to absorb ammonia from air using aqueous sulfuric acid. Gas enters the tower at \(31.0 \mathrm{lbmol} /\left(\mathrm{h}-\mathrm{ft}^{2}\right)\) and is 1.0 \(\mathrm{mol} \%\) ammonia. Aqueous \(10.0 \mathrm{~mol} \%\) sulfuric acid is fed at a rate of \(24.0 \mathrm{lbmol} /\left(\mathrm{h}-\mathrm{ft}^{2}\right)\). Equilibrium partial pressure of ammonia above a solution of sulfuric acid is zero. We desire an outlet ammonia composition of \(0.01 \mathrm{~mol} \%\) in gas.
a. Calculate \(\mathrm{n}_{\mathrm{OG}}\) for a countercurrent column.
b. Calculate \(\mathrm{n}_{\mathrm{OG}}\) for a cocurrent column.
c. What is the importance of gas and liquid flow rates?