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Unformatted text preview: Gas Chromatography Identity of unknown Retention time: unknown Retention time: standard Identity of standards n-pentane 0.800 0.802 acetone 2-Methylpentane 0.888 0.811 n-pentane cyclohexane 1.066 0.935 n-hexane n-heptane 1.380 1.051 benzene toluene 1.345 1.093 3-Methylhexane p-xylene 1.727 1.150 n-heptane o-xylene 1.825 1.467 n-octane n-decane 2.302 1.822 o-xylene Benzyl alcohol 2.444 2.292 n-decane Table 1. Retention times of the components in the unknown and standards in seconds, as well as the identities of the components. The retention times of the various components are in accordance with the boiling points of the components; the higher the boiling point, the longer the retention time. In order to find the identities of the unknown components, the retention times of the unknown were compared to the retention time of the standards, and then boiling points were compared. For example, the first component in the unknown solution had a retention time of 0.800 seconds. The component in the standard with the closest retention time and in the list of possible components in the lab manual was n-pentane, with...
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