In experimental studies using a wetted-wall absorption column, the mass transfer coefficient for chlorine into water is 200 um s.s1. i. Explain what is meant by the term wetted-wallabsorption column,

and describe how they differ frompacked tower absorption columns. ii. What advantages do wetted-wall columns have over packed towers? iii. Given the diffusion coefficient of chlorine in water is1.25 x 10° cm? s", determine the pseudo-first order rate constant for the reaction between chlorine and water.