Purpose:
The purpose of the experiment was to perform three different kinds of distillations upon
three different kinds of two-solution mixtures. After distillation, the temperature and refractive
index of each fracti
...
Purpose:
The purpose of the experiment was to perform three different kinds of distillations upon
three different kinds of two-solution mixtures. After distillation, the temperature and refractive
index of each fraction was measured and the relative efficiencies of each method at separating
compounds were evaluated.
Introduction:
Fifteen procedures were performed in total. Five distillation methods were employed:
simple, and fractional (either using a vigreaux, scouring pads, glass beads, or carborundum
chips). Three different 1:1 solution mixtures were distilled: green (methyl acetate and ethyl
acetate), yellow (methyl acetate and butyl acetate) and blue (methyl acetate and n-propyl
acetate).
Results and Discussion:
Fractional distillation with glass beads was performed on a 1:1 solution mixture of
methyl acetate and ethyl acetate. The results of this trial were compared to data for six other
experiments: fractional distillation using glass beads and methyl acetate:butyl acetate, fractional
with glass beads using methyl acetate and n-propyl acetate, and all other distillation methods
using methyl acetate and ethyl acetate (simple, vigreaux, scouring pads, carborundum). The
temperature, volume, and refractive index of each fraction taken during each trial was measured
and tabulated (Tables 1-8).
Table 1: Fraction Information on Fractional, Glass Bead Distillation of Methyl AcetateEthyl Acetate (Green)
Fraction
Temperature
Range of Fraction
(ºC)
Approximate
Volume of Fraction
(mL)
1 52-57ºC 3.0 mL
2 59-60ºC 3.0 mL
3 60-62ºC 3.0 mL
4 62-64ºC 3.2 mL
5 64-66ºC 2.9 mL
6 66-70ºC 2.7 mL
7 70-72.5ºC 2.8 mL
8 73-74ºC 2.3 mL
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