Solubility Test Lab Report
Introduction For the last week, specific tests had to be applied to determine the unknown solid that was given out randomly. Physical tests, solubility test, characteristic tests, NMR spectrums, and IR spectrums were all utilized to distinguish the identity of the solid. These assessments and a couple additional tests will be utilized again to determine the unknown liquid that was given to us in class. The other characteristics that will be looked at will be the boiling point, refracted index, and the density of the liquid.
Methods / Data The physical properties of the liquid unknown were examined first. The color of the substance was clear yellow. The chemical also produced a foul smell when the lid of it was opened. Usually foul smells …show more content…
The first few peaks that were looked at were located between 3000 and 2800 cm-1. According to the IR absorption frequency table, the points around that location are sp3 carbons bonded to hydrogens. Between 3100 and 3000 cm-1, there are some strong signals that indicate sp2 carbons bounded to hydrogens. The sp2 carbon hydrogen bending was found around 750 cm-1. The bending fits in its range, which is generally between 1000 and 650 cm-1. The last few peaks that were inspected were found around 1600 cm-1. This signifies a carbon having a pi bond with another carbon in a benzene ring. Therefore, this rules out all the alkanes and just leaves the phenyl hydrocarbon …show more content…
The solubility test determined that the unknown liquid was either an alkane, an alkyl halide, a phenyl hydrocarbon, or a phenyl halide. The Beilstein test showed that there were no halides in the compound and the negative test from the Iodine Charge-Transfer Complex minimized our choices to be either an alkane or a phenyl hydrocarbon. The NMR and the IR spectrums confirm the presence of a phenyl group in the compound.
To decide between 1,2-dimethylbenzene and isopropylbenzene, the physical properties and the NMR spectrum had to be further inspected. The physical properties of the unknown’s boiling point, density, and refracted index closely resemble the literature values of 1,2-dimethylbenzene. Table 1 gives the literature values of both 1,2-dimethylbenzene and isopropylbenzene.
Table 1. Physical Characteristics of Chemicals
Chemical Boiling point (C) Density (g/mL) Refracted Index
Methods / Data The physical properties of the liquid unknown were examined first. The color of the substance was clear yellow. The chemical also produced a foul smell when the lid of it was opened. Usually foul smells …show more content…
The first few peaks that were looked at were located between 3000 and 2800 cm-1. According to the IR absorption frequency table, the points around that location are sp3 carbons bonded to hydrogens. Between 3100 and 3000 cm-1, there are some strong signals that indicate sp2 carbons bounded to hydrogens. The sp2 carbon hydrogen bending was found around 750 cm-1. The bending fits in its range, which is generally between 1000 and 650 cm-1. The last few peaks that were inspected were found around 1600 cm-1. This signifies a carbon having a pi bond with another carbon in a benzene ring. Therefore, this rules out all the alkanes and just leaves the phenyl hydrocarbon …show more content…
The solubility test determined that the unknown liquid was either an alkane, an alkyl halide, a phenyl hydrocarbon, or a phenyl halide. The Beilstein test showed that there were no halides in the compound and the negative test from the Iodine Charge-Transfer Complex minimized our choices to be either an alkane or a phenyl hydrocarbon. The NMR and the IR spectrums confirm the presence of a phenyl group in the compound.
To decide between 1,2-dimethylbenzene and isopropylbenzene, the physical properties and the NMR spectrum had to be further inspected. The physical properties of the unknown’s boiling point, density, and refracted index closely resemble the literature values of 1,2-dimethylbenzene. Table 1 gives the literature values of both 1,2-dimethylbenzene and isopropylbenzene.
Table 1. Physical Characteristics of Chemicals
Chemical Boiling point (C) Density (g/mL) Refracted Index