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DT6-15_7301030TTH_2.pdf - A Research Study Presented to the...

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A Research Study Presented to the Faculty of theDepartment of Chemical Engineering School of Engineering and ArchitectureSaint Louis UniversityIn Partial Fulfillment of the Requirementsin Organic Chemistry LaboratorySubmitted by:Arcala, ChristianDayrit, GeraldFontillias, GeraldCaoile, Katrina JewelGapuz, Kyla MaeGuaki, MyrtleSubmitted to:Engineer Vera Lee Mendoza
EXPERIMENT NO.6
EXPERIMENT NO. 7ALKENESDISCUSSION OF THEORYAlkenes are also known as olefins, these are organic compounds that consist of carbonand hydrogen atom which makes them a hydrocarbons and with comes to their chemicalstructure they are consist with one or more carbon-carbon double bonds. Alkenes are the types ofhydrocarbons that are unsaturated because they have one or more double bonds in their chemicalstructure. Alkenes are conventionally named with the suffix-ene.I. Physical Properties of AlkenesA. Physical stateNumber of Carbon atomsPhysical state2 to 4Gas5 to 16Liquid17 and aboveSolidTable 1. State of matter of alkenes depending from the given number of carbon atoms.As what it observed from the table 1. Alkenes can be in a formed of solid, liquid and gas.When alkenes have a number of carbon atoms 17 and above they are generally solid as rock theyare more like waxy, like the paraffin wax which is use to make candle. While, alkenes that onlyhave 2 to 4 number of carbon atoms are likely to be gases, like the ethene (±²³´) and propene(±µ³).Then, when the alkenes consist of only 5 to 16 number of carbon atoms its physicalstates become liquid, like the hexene (±³·²) and pentene (±¸³·t¹.B. DensityWhen it comes to the density alkenes are actually lighter than water and they areinsoluble to this inorganic compound due to their non-polar characteristics.
C. Boiling Points and Melting pointsThe boiling points of alkenes are similar to the boiling point of the alkanes with the samenumber of carbons. Most likely, ethene, propene and butene are gases at room temperature andthe rest are liquids. Alkenes boiling points are depends on their molecular mass (chain length)which means the more intermolecular are added that higher their boiling point is. Intermolecularforces of alkenes get stronger with increase in the size of molecules. While the melting points ofthe alkenes is depends on the packaging of the molecules. Table 2 will show the boiling andmelting point of the common alkenesTable 2. Boiling and Melting point of common alkenesD. PolarityCompoundsMelting Points (º)Boiling points (º)Ethene-169-104Propene-185-47Trans-2-Butene0.9Cis-2-butene3.7Trans 1,2-dichlorobutene155Cis 1,2-dichlorobutene1521-Pentene-16530Trans-2-Pentene-13536Cis-2-Pentene-180371-Heptene-1191153-Octene-101.91223-Nonene-81.41475-Decene-66.3170
Polarity of alkene compounds is affected by their chemical structure and functional group.

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Term
Fall
Professor
NoProfessor
Tags
Atom, Carboxylic acid

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