Question #44936

An amount of $0.55$ moles of ethyl bromide (\ce{C2H5Br}) is subjected to ammonolysis using a controlled amount of ethanolic ammonia at $298$ K. The reaction goes to completion, yielding a mixture of primary ($1^\circ$), secondary ($2^\circ$), and tertiary ($3^\circ$) amines in a $4:2:1$ molar ratio. (Assume no quaternary ammonium salt is formed).

The entire amine mixture is then treated with an excess of Hinsberg reagent (\ce{C6H5SO2Cl}) in the presence of aqueous \ce{KOH}. The resulting reaction mixture is extracted with diethyl ether to separate it into an aqueous layer (A) and an organic layer (B).

Layer B is then thoroughly washed with dilute aqueous \ce{HCl}, and the ether is evaporated to leave behind an organic compound (C).

Calculate the mass of compound (C) obtained. (Molar masses in g/mol: H=1, C=12, N=14, O=16, S=32)