Classification Tests for Hydrocarbons
Classification Tests for Hydrocarbons
Authors: Goldie Ann Tejada, Allain Joseph S. Templo, Kristinlyn Trajano, Kevin Viray, Quennie Yu
Group 10, 2F-PH, Faculty of Pharmacy, University of Santo Tomas
ABSTRACT
The test compounds undergo different physical and chemical tests to differentiate their intrinsic physical properties and chemical properties. Physical state, color, and odor were noted through simple observation. Miscibility of the test compounds were noted through color change or a warming effect. Flammability was tested by igniting 3-5 drops of the sample in a small evaporating dish. Baeyer’s test and Bromine test were used for tests for active unsaturation. Aromaticity of the compound was determined through nitration. Oxidation was tested by introducing 8 drops of 2% KMnO4 solution and 3 drops of 10% NaOH solution to 4 drops of the sample organic compound in a test tube and warming the mixture through water bath. All of the test compounds are liquid and colorless and observed to have a plastic like odor. Miscibility test shows that all of the organic compounds are immiscible and all are flammable. Tests for active unsaturation indicate that hexane, heptane, cyclohexane, benzene and toluene are saturated while cyclohexene is actively unsaturated. Hexane, heptane, benzene, and toluene are classified as aliphatic while cyclohexane, and cyclohexene are aromatic. All are not oxidized except for cyclohexene.
I. Introduction
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons can be aromatic or aliphatic depending on their structure. Hydrocarbons that contain a delocalized ring of pi bonds are called aromatic hydrocarbons and those without a delocalized ring of pi bonds are called aliphatic hydrocarbons. To be classified as Aromatic, a compound must have an uninterrupted cyclic cloud of pi electrons above and below the plane of the molecule and there should be an odd number of pairs of pi
Authors: Goldie Ann Tejada, Allain Joseph S. Templo, Kristinlyn Trajano, Kevin Viray, Quennie Yu
Group 10, 2F-PH, Faculty of Pharmacy, University of Santo Tomas
ABSTRACT
The test compounds undergo different physical and chemical tests to differentiate their intrinsic physical properties and chemical properties. Physical state, color, and odor were noted through simple observation. Miscibility of the test compounds were noted through color change or a warming effect. Flammability was tested by igniting 3-5 drops of the sample in a small evaporating dish. Baeyer’s test and Bromine test were used for tests for active unsaturation. Aromaticity of the compound was determined through nitration. Oxidation was tested by introducing 8 drops of 2% KMnO4 solution and 3 drops of 10% NaOH solution to 4 drops of the sample organic compound in a test tube and warming the mixture through water bath. All of the test compounds are liquid and colorless and observed to have a plastic like odor. Miscibility test shows that all of the organic compounds are immiscible and all are flammable. Tests for active unsaturation indicate that hexane, heptane, cyclohexane, benzene and toluene are saturated while cyclohexene is actively unsaturated. Hexane, heptane, benzene, and toluene are classified as aliphatic while cyclohexane, and cyclohexene are aromatic. All are not oxidized except for cyclohexene.
I. Introduction
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons can be aromatic or aliphatic depending on their structure. Hydrocarbons that contain a delocalized ring of pi bonds are called aromatic hydrocarbons and those without a delocalized ring of pi bonds are called aliphatic hydrocarbons. To be classified as Aromatic, a compound must have an uninterrupted cyclic cloud of pi electrons above and below the plane of the molecule and there should be an odd number of pairs of pi
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