the United States have taken cues from the homosexual rights movement‚ and have tried to position themselves as freedom-minded advocates trying to ally themselves with conservatives. The media—both news programs and entertainment venues such as the TLC reality show Sister Wives—have tried to convince the American public that their lifestyle can be wholesome and normal. While some same-sex marriage advocates have attempted to distance themselves from polygamists by saying the “slippery slope” argument
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sulfate as the phase-transfer catalyst. Monitor the progress of the reaction by thin-layer chromatography. BACKGROUND REQUIRED You should be familiar with extraction‚ evaporation‚ and thin-layer chromatography techniques. You may wish to review the TLC lab from earlier in the semester! BACKGROUND INFORMATION In organic molecules‚ carbon may exist in several different oxidation states. In typical organic compounds‚ the oxidation number for carbon may vary from –4 (a very reduced form of carbon‚
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the recrystallization was very effective in removing impurities. Conclusion: When doing this experiment I made a batch of crude benzoic acid‚ this batch was meant to be used for a titration‚ recrystallization‚ six melting points and a TLC experiment. When I started the experiment I believed that I would have enough crystals to complete all experiment with some crystals left over‚ however once the titration came about I realised that I did not have enough benzoic acid‚ therefore instead
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colored components of plant leaves. Today‚ the name is a bit misleading‚ because most forms of chromatography do not depend on color. Several types of chromatography are commonly used‚ among which are paper chromatography‚ thin-layer chromatography or TLC‚ liquid-liquid chromatography‚ gas chromatography‚ and high performance liquid chromatography or HPLC. Chromatography is so useful that some form can be found in most scientific laboratories around the world. For example‚ in forensic chemistry crime
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partitioning‚ this separation technique exploited the different polarity of the compounds in the spinach extract. Three fractions with different colors were obtained. The extract and its fractions were analyzed using thin layer chromatography (TLC). The TLC results showed that there was one compound (Rf=0.979) in the first fraction; there were three compounds (Rf1=0.839‚ Rf2= 0.691‚ Rf3=0.149) in the second fraction; there was one compound (Rf=0.017) in the third fraction. The separations of compounds
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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) Disregarding stereoisomers‚ how many different enols can the β-diketone CH3 COCH 2 COCH 2 CH3 form? A) 3 B) 1 C) 4 D) 0 E) 2 2) Methylamine reacts with acetophenone to yield the: A) imine. B) enamine. C) acetal. D) amide
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Experiment 3: Isolation of Chlorophyll from Spinach and Chromatography Performed February 14th and 16th By Kyle Herzog Organic Chemistry 344 Section 807 Spring 2012 Objective: The purpose of the experiment is to extract pigments from spinach leaves and separate them by column and thin layer chromatography‚ determining Rf values for the pigments. Equations: Rf= Distance travelled by a given compound/Distance travelled by a solvent solution 1. Crude- 4.25/5.5= 0.773 2. Carotene-
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Aspirin Background Aspirin Aspirin‚ or acetylsalicylic acid (ASA) is a salicylate drug‚ and is generally used as an analgesic (something that relieves pain without producing anaesthesia or loss of consciousness) for minor aches and pains‚ to reduce fever (an antipyretic)‚ and also as an anti-inflammatory drug. Aspirin works by prohibiting biological substances such as prostaglandins. Many different prostaglandins exist in the human body each serving a plethora of physical functions.
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chemistry lab report : reaction of alcohol CHEMISTRY LAB REPORT SK026 SEMESTER 2 SESSION 2011/2012 TITLE :REACTION OF ALCOHOL DATE : NAME : MATRIC NO : PARTNER : PRACTICUM : SUPERVISOR : Title : Reaction Of Alcohol Objectives : 1. To classify alcohol 2. To study the chemical properties of alcohols Introduction: Alcohol is a class of organic compound containing hydroxyl group‚ OH as the
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typically silica “gel” or powdered alumina‚ depending on the types of compounds you wish to separate. The mixture is placed on top of the packing material and a steady‚ continuous flow of eluting solvent is passed through the column. Although in the TLC experiment only one developing solvent is used to develop a plate‚ this is not the case for column chromatography: we can switch solvents in the middle of the process. A typical column chromatography experiment would involve starting with a less polar
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