solve also item C!!!!!!! or dislike

10.5 A pyridine-water solution, 50% pyridinc, is to be continuously and countercurrently extracted at the rate 2.25kg/s(17800lb/h) with chlorobenzene to reduce the pyridine concentration to 2%. Using the coordinate systems plotted in (b) and (c) of Prob. 10.l: (a) Determine the minimum solvent rate required. (b) If 2.3kg/s(18250lb/h) is used, what are the number of theoretical stages and the saturated weights of extract and raffinate? Ans.: 3 theoretical stages. (c) Determine the number of transfer units NtOR for the extraction of part (b). Ans,: 4.89