Project OH CH3 H₃C HCl, H₃C/ The CI CH, + H2O H3C H3C 2-methyl-2-butanol bp 102°C MW 88.1 density 0.813 g/mL 2-chloro-2-methylbutane bp 85.7°C MW 106.6 density 0.871 g/mL In Project 6.2, excess quantity of concentrated hydrochloric acid (12 M) was mixed with the 2- methyl-2-butanol in a separatory funnel at room temperature. (a) Why is saturated NaCl aqueous solution, rather than just simply H20, used for the first wash of the organic layer? (b) Why is then followed with saturated NaHCO3 aqueous solution washing of the organic phase, and CO2 gas evolved? (c) Why anhydrous CaCl2 is added to the organic phase before the short-path distillation step?