Atom economy

Which route to chloroethane has an atom economy of 100 %? A. $\ce{C2H5OH + PCl5 -> C2H5Cl + POCl3 + HCl}$ B. $\ce{C2H6 + Cl2 -> C2H5Cl + HCl}$ C. $\ce{C2H5OH + HCl -> C2H5Cl + H2O}$ D. $\ce{C2H4 + HCl -> C2H5Cl}$

One route to 2-bromopropane is the substitution of propane by bromine in ultraviolet light. $\ce{C3H8(g) + Br2(g) -> C3H7Br(g) + HBr(g)}$ ($\ce{C3H8}$ = 44.11 $\mathrm{g\,mol^{-1}}$, $\ce{Br2}$ = 159.80 $\mathrm{g\,mol^{-1}}$, $\ce{C3H7Br}$ = 123.00…

For the overall reaction shown above, calculate the atom economy of this route from propane and ethane to propyl ethanoate. Use sections 1 and 7 of the data booklet.

(i) If the reaction has a percentage yield of 80 %, calculate the mass, in g, of benzene that would be produced from 2.0 kg of cyclohexane. (ii) Calculate the atom economy for this reaction, as a percentage.

Propan-2-ol reacts with tetradecanoic acid to produce propan-2-yl tetradecanoate, an ester used in skin creams. $\ce{C13H27COOH(l) + CH3CH(OH)CH3(l) <=> C13H27COOCH(CH3)2(l) + X(l)}$ (i) Identify the by-product X(l). (ii) Calculate the atom economy of this…