CHEM 233 Lecture Notes - Lecture 4: Partition Coefficient, Elution, Graduated Cylinder
6 Dec 2015
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Separation of liquids by fractional distillation and analysis by gas. Methods and background: (a) ethyl acetate b. p: 77. 1 c (b) butyl acetate b. p: 126 c. 1: (a) ethyl acetate (b) butyl acetate and boiling points. The objective of this lab is to utilize the fractional distillation method to separate a 1:1 mixture of ethyl acetate (etoac) and butyl acetate (buoac). Ethyl acetate and butyl acetate have similar structures in which they contain ester groups. However, butyl acetate has a couple more ch2 groups which allows more electrons, induced dipoles and increased london. Dispersion attractive forces as well as having a higher boiling point and lower equilibrium vapor pressure. Figure 2 indicates the hempel column which is utilized to block direct rising of the vapor by increasing surface area directly in front of it with the rings as the packing material.
