Gas Chromatography Lab Report

Distillation is a method used to purify a liquid. Distillation is a process of heating a liquid to boiling and then collecting the condensed vapors from the boiling liquid in a different vessel. After the setting up the glassware for the simple distillation I found the boiling points for each four fractions. The boiling point range for the first fraction was 29.3°C to 29.5°C. The boiling point range for the second fraction was 31.1°C to 40.6°C. The boiling point range for the third fraction was 65.8°C to 67.7°C. The boiling point range for the fourth fraction was 78.8°C to 80.1°C. A gas chromatograph is a device that measures the content and the percentage of the tested sample. For the Gas Chromatography part of the experiment I injected a 2 microliter sample of each fraction into the Gas Chromatography to find the percentage of hexane, heptane, or octane is present in each solution. …show more content…
The first fraction was 100.0% hexane and 0.000% octane. The second fraction was 96.09% hexane and 3.910% octane. The third fraction was 8.070% hexane and 91.93% octane. The fourth fraction was 0.000% hexane and 100.0% octane. My group compared the results of other groups who were finding the percentages in the hexane and heptane sample, the results were different between the two samples. The first fraction of the hexane and heptane solution was 81.08% hexane and 18.92% heptane. The second fraction of the hexane and heptane solution was 58.54% hexane and 41.46% heptane. The third fraction of the hexane and heptane solution was 5.890% hexane and 94.11% heptane. The fourth fraction of the hexane and heptane solution was 0.000% hexane and 100.0%