"Bromine" Essays and Research Papers

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Bromine

that Awful Smell”? - Bromine There are 118 known elements to man, and each of them differ in its own way. They vary from weight, structure, color, and much more, but many of them are similar to others and can be grouped accordingly. One element that varies drastically from others is one whose stench is so horrible, that the original name of the element was changed from muride to bromos, which means “stench” in Greek. Thus, bromine was named. Like many other known elements, bromine was discovered by...

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Addition of Bromines

found to determine syn or anti addition of bromines. The melting point was 199-203°C and the NMR J values angle is at 167 which both prove the erythro-2,3-dibromo-3-phenylpropanoic. Determination of the Stereochemistry of 2,3-dibromo-3-phenylpropanoic acid. Introduction The purpose of this experiment was to determine the mechanism of the reaction of trans-cinnamic acid with the addition of bromines to 2,3-dibromo-3-phenylpropanoic acid. An addition of bromine was added to trans-cinnamic acid and it...

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Stereochemistry: Addition of Bromine to Trans-Cinnamic Acid

STEREOCHEMISTRY: ADDITION OF BROMINE TO trans-CINNAMIC ACID Required Prelab Readings: McMurry Chapter 5, Sections 8.2 & 21.2 Morhig, Sections 7.1 and 7.3. Previous techniques that you must know and be able to perform: Suction Filtration and Melting Point This experiment is designed to demonstrate two concepts. First, it will provide a demonstration of how chemists can use chemical reactions to understand reaction mechanisms. Second, is the concept of multi-step synthesis. You will...

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Lab Report

iodine will be added to a test tube using a dropper in lieu of a graduated cylinder. Appearance of solution will be recorded. Then, 1mL of hexane will be added to the test tube mix. Observations of both layers will be recorded. Process repeated for bromine. For the third solubility test, 1mL of hexane will be added to a clean test tube. Then, 0.5mL of Clorox and 0.5M HCl (to make chlorine) are added. The color of each layer is noted. Part III: Electronegativity Testing This set of reactions...

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Inorganic Chemistry Essay

molecules hold them together. The larger the molecule (as it moves down the halogen group) the bigger the intermolecular forces are between electrons because with more rings the distance between each electron is larger. The larger elements such as Bromine and Iodine are larger molecules with a larger amount of intermolecular force between each electron. This increase in intermolecular attraction means that the required heat energy to reach the boiling point increases. Fluorine has a significantly lower...

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Oxidation Reduction: Range the Metals Copper, Lead, Silver and Zinc Together With Hydrogen to Find the Strongest Reducing Agent

plates. If the positive metal ions in the solutions are less powerful reducing agents, then the metal in the plate will be reduced and hence form a deposition of solid metal. e.g. Zn + Pb2+-> Zn2+ + Pb EXPERIMENT 2: Aim: To range the halogens bromine, chlorine and iodine, with the strongest oxidising agent first. Hypothesis: A strong oxidising agent is a species that easily gains electrons, and is hence easily reduced. The ionisation energy of the halogens (Cl2, I2, Br2) decreases down the group...

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Comparing the Reactivity of Alkanes and Alkenes

alkane and an alkene Hypothesis: The cyclohexene would react to the bromine water and turn colourless, whilst the cyclohexane won’t react. Risk Assessment: What’s the problem? | How do you fix? | How does it work? | Bromine water is corrosive to the skin | Wear gloves | Stops the Bromine water from reaching skin | Cyclohexane/ene is highly flammable | Keep away from naked flames. | No naked flame = no ignition. | Bromine water is very toxic if inhaled | Conduct experiment in fume cupboard...

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4-Methylcyclohexene

tests performed. Unsaturation Tests run on 4-methylcyclohexene and the starting 4-methylcyclohexanol Br2 test: Cyclohexanol = Yellow-orange Cyclohexene = Colorless Compounds containing double bonds are characterized through a red-colored bromine solution that turns colorless when it contacts an alkene compound. The Br2 adds to the double bond and results in a positive test for an alkene. KMnO4 test: Cyclohexanol = Purple Cyclohexene = Brown The purple potassium permanganate solution...

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Bromination of Trans- Stilbene to Form 1,2- Dibromo- 1,2-Diphenylethane

Abstract 1,2-dibromo-1,2-diphenylethane was produced by the bromination of trans-stilbene through the addition of hydrobromic acid (HBr) and hydrogen peroxide (H2O2). This experiment was a greener bromination of stilbene because bromine was generated in situ and ethanol was used as the solvent. The melting point (243.30°C), mass (.427g), and percent yield (45.54) of the crystals were recorded. The FTIR was used to confirm that the product was produced. The peaks on the HNMR revealed...

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A Fatty Acid Monolayer: Determination of Avogadro's Constant

of a halogen other than the initial. So the data shown in the C l-/ Br2 box shows a dark orange color which means there was not reaction, while the box Br-, Cl2 shows reaction did occur. This means Chloride must be a stronger oxidizing agent than Bromine. 5. Weakest to strongest oxidizing agent: I2 < Br2 < Cl2 6. Yes, the ranking above does show a trend that following periodic table position. I2 is below Br2 and Cl2 and Cl2 is above Br2 and I2 on the table. The stronger oxidizing...

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