Question

(4pts) When you perform a liquid-liquid ext 17) which of the following organic solvent is on the bottoming a extraction us which is on top? (write your answer by the solvent name p a) Ethyl acetate b) hexane c) Dichloromethane d) diethyl ether a liquid-liquid extraction and you have a 18) (3pts) If you are performing carboxylic acid and a non-acidic compound, which combinat you use for the separation? of solvents a) dichloromethane/HCI b) dichloromethane/methanol c) dicholoromethane/NaOH d) NaOH and NaHCO3 (1pt) Why? 19) (2pts) Which of the following cations is most stable? a) the methyl cation b) tert butyl cation c) the iso-propyl cation 20) (2pts) Dihedral angles are defined as 21) (2pts) The dihedral angle is in the staggered conformation and in the eclipsed central atomin of groups ona 22) (2pts) Stereoisomers differ by space epoxde involes the us 23) (4pts) A common procedure for the synthesis of an of an alkene and as reagen

Answer 1