A water stream is saturated with \(\mathrm{CCl}_{4}\) at \(25^{\circ} \mathrm{C}\) and contains \(155 \mathrm{ppm}\) (mol) of \(\mathrm{CHCl}_{3}\). The water stream is stripped with air at a pressure of \(1.0 \mathrm{~atm}\). We want \(\mathrm{CCl}_{4}\) in the outlet water to be \(1.0 \mathrm{ppm}\) (mol) or lower and \(\mathrm{CHCl}_{3}\) in the outlet water to be \(10.0 \mathrm{ppm}\) (mol) or lower. \(\mathrm{L} / \mathrm{V}=100\) in parts \(\mathrm{a}, \mathrm{b}\), and \(\mathrm{c}\).

a. How many equilibrium stages are required?

b. What are the outlet liquid concentrations in ppm (mol)?

c. What are the outlet vapor concentrations in \(\mathrm{ppm}(\mathrm{mol})\) ?

d. What is the minimum \(\mathrm{V} / \mathrm{L}\) value (infinite number of stages)?