Mapua Institute of Technology Organic Chemistry Laboratory 2 Final Report Factors Affecting the Relative Rates of Electrophilic Aromatic Substitution Reaction Justiniano‚ Priscilla Raiza N. School of Chemical Engineering and Chemistry‚ Mapua Institute of Technology‚ Intramuros‚ Manila‚ Philippines Experiment No.1‚ Submitted on August 6‚ 2011 at N402. Abstract EXPERIMENT NUMBER ONE IS ALL ABOUT THE ELECTROPHILIC SUBSTITUTION OF AROMATIC COMPOUNDS. AROMATIC COMPOUNDS ARE THOSE ORGANIC
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Acetylene gas was used for the selective reactivity of hydrocarbons to functional group tests; Bayer’s test‚ Bromine test light‚ Bromine test dark‚ and Tollen’s test. In Bayer’s test‚ only Acetylene‚ Eugenol and Unknown hydrocarbon 2 reacted positively and the rest retain the purplish color of KMnO4. On the other hand‚ the five compounds in Bromine test with light reacted positively. In Bromine test dark‚ Hexane and Unknown hydrocarbon 1 did not react because light (UV) is absent. Lastly‚ in Tollen’s
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orange flame and burned mildly during the burning process. No soots and smoke were produced. Unknown B Orange flame burned vigorously. A small amount of black soot and smoke were produced during the burning process. Part B : Reaction with bromine Compounds Observations In the dark Exposed to sunlight Hexane Two layers were formed in the mixture. Upper layer was colourless and lower layer was pale yellow. Two layers were formed in the mixture. Upper layer was colourless and lower
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is finally tested to determine whether or not it has been dehydrated. The three tests used were infrared spectroscopy‚ Bromine chemical test and Bayer’s chemical test. The infrared spectroscopy showed a large narrow peak at 3062.12(cm-1) and 3020.71(cm-1) which indicates that there is a double bond present. To assure the results were correct the chemical tests were done. The Bromine test was found to be positive for cyclohexene. The OH group was removed from the cyclohexanol and replaced with a double
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following substance freezes at 39oC? a) Copper b) Mercury c) Steel d) Bromine 5. Which of the following substance boils at 357oC? a) Bromine b) Steel c) Copper d) Mercury 6. Which of the following substance has all the properties that should be present in thermometric materials? a) Mercury b) Bromine c) Steel d) Copper 7. Which thermometers are widely used in laboratories? a) Mercury-in-glass thermometers b) Bromine-in-glass thermometers c) Steel-in-glass thermometers d) Copper-in-glass
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1 Ethene may be converted into poly(ethene). What type of reaction is this? (A) Condensation (B) Hydrolysis (C) Oxidation/reduction (D) Polymerisation 2001:1 1 2 You have carried out a first-hand investigation to compare the reactivity of an alkene with its corresponding alkane. (a) State the name of the alkene. 2002:16(a) 1 (b) Outline a procedure to compare the reactivity of this alkene with its corresponding alkane. 2002:16(b) 2 (c) Describe the
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Upon addition of bromine‚ the brown color of bromine quickly disappears as the bromine adds to the double bond in the products. Addition of bromine to the fractional distillate caused the bromine to discolor. The addition of bromine to 2-methyl-cyclohexanol remains brown because there is an absence of double bound (saturation). Addition of potassium permanganate caused the
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result of the two reactions is the depletion of ozone and atomic oxygen.6 Chlorofluorocarbons (CFCs)‚ halons‚ and methyl bromide are a few of the ozone depletion substances (ODS) that break down ozone under intense ultraviolet light. The bromine and fluorine in these chemicals act as catalysts‚ reforming ozone (O3)
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the bromonium ion forming the erythro enantiomer. 7) (a)If the cinnamic acid were a mix of cis and trans than we would have gotten a mixture of erythro and threo product in the end. (b) If only 5mL of the bromine solution is added then the reaction would not be able to run to completion and bromine would be the limiting reagent causing less final product. (c) If cyclohexane was used then it would not react with the bromide nearly as much as the cyclohexene and there would be a larger amount of bromide
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percent yield of cyclohexene. Lastly‚ a bromine test was carried out to quantitatively test the presence of cyclohexene product in the prepared sample. A total of 2-3 drops of 3% bromine in dichloromethane was added to a new test tube as well one drop of the prepared cyclohexene. Upon observing a color change from brown to clear‚ one can confirm the presence of cyclohexene in the obtained
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