Lab Protocol #8 - Dehydration of 3‚3-dimethyl-2-butanol KEYWORDS: alkenes‚ E2‚ E1‚ carbocation stability‚ elimination A. Introduction. The dehydration of alcohols is an ELIMINATION reaction that is commonly used to form alkene molecules. The mechanism for the dehydration of alcohols consists of transforming the –OH functional group into a better leaving group by using a strong acid to protonate the alcohol. After –OH has been transformed into –OH2+‚ it becomes easier to break the σ-bond between the
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HCl and others for use with the NaOH. 2. Record the exact molarity as they appear on the stock bottles. 3. Determine the mass of each of you antacid tablets. 4. Dispense 25 mL of HCl solution into the Erlenmeyer flask‚ and then add one of the antacid tablets to the flask. 5. Bring the solution to a boil to dispel any undissolved CO2. 6. Add two or three drops of an indicator to our antacid mixture. 7. Titrate antacid mixture with the NaOH solution until we have reached
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Chem 105 Guide to the Formal Laboratory Report The purpose of a formal report is to communicate effectively to another person the goal‚ procedure‚ data analysis method‚ and results of your laboratory work. The report is divided into several well-defined sections. Each section must be present in a complete report. To earn an outcome point for the laboratory report‚ a student must submit a formal lab report that earns a score of at least 90/100. Each error (factual‚ grammatical‚ typographical
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beaker from the ice bath onto the hot plate and measure the temperature of this solution to make sure it was still at or under 25 °C. 4. After letting the mixture stir for some time‚ prepare 5mL of benzaldehyde with 1.85mL of acetone into a 50mL Erlenmeyer Flask. 5. Transfer about half of the mixture into the stirring solution of NaOH‚ water and ethanol. After 2 -3 minutes‚ yellow cloudiness formed. After 10 minutes add the remainder of the solution. Allow the solution to stir for 30 more minutes.
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Rate of Decomposition of Calcium Carbonate Theory Calcium carbonate‚ CaCO3‚is one of the most abundant minerals on the Earth. More than 4% of the Earth’s crust is composed of calcium carbonate. It is a major component in limestone‚ marble‚ seashells‚ bedrock‚ etc. Limestone and marble have been among the most widely used building materials for more than 5 000 years‚ from the pyramids in Egypt to the Parthenon in Greece and the Taj Mahal in India. In many places‚ limestone is also the foundation
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The procedure was taken from “From Drosophila cDNA in E. coli plasmid to homologous human proteins” lab manual (4). - Colony Picking: Two E. coli colonies were grown on agar plates and treated with ampicillin. They contained the plasmid with genes for ampicillin resistance and Drosophila cDNA sequence. - Plasmid Isolation: We used the QuickLyse Miniprep Plasmid DNA purification systems to isolate the plasmid DNA. Indeed‚ the bacterial cells were removed from the liquid broth and were resuspended
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future calculations‚ distilled water was added up to the 100mL mark on the cylinder. The mixed solution was then put into a 250 mL Erlenmeyer flask. That is as far as the similarities between the two titration methods go. In order to prepare the first soda for the traditional titration‚ five drops of phenolphthalein dye are added to the soda water solution in the flask. Next‚ the tip of the buret was placed over top of the soda solution. NaOH solution was added at approximately 2mL increments
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Name: Date of Experiment: November 20‚ 2012 Group mates: Date of Submission: November 28‚ 2012 Experiment No. 1 ISOLATION OF CAFFEINE FROM TEA I. Introduction Caffeine is a very common substance and is found in coffee‚ tea‚ soft drinks‚ chocolate‚ and "stay-awake" pills such as Vivarin. It can be synthesized or isolated from natural sources. Caffeine constitutes approximately 4% of tea and coffee leaves‚ and is also found in cola nuts and cacao beans. Caffeine is a member
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Animal metabolism consists of the utilization of nutrients absorbed from the digestive tract and their catabolism as fuel for energy or their conversion into substances of the body. Metabolism is a continuous process because the molecules and even most cells of the body have brief lifetimes and are constantly replaced‚ while tissue as a whole maintains its characteristic structure. This constant rebuilding process without a net change in the amount of a cell constituent is known as dynamic equilibrium
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EXPERIMENT 2: SYNTHESIS OF ORANGE II (2-NAFTHOL ORANGE OBJECTIVE 1. To produce dye based to the coupling of diazonium. 2. To understand the characteristic of dye orange II. INTRODUCTION The first dye was introduced by William Henry Perkin on 1856. It can be produced by the coupling of diazonium sulfanilic acid with nafthol in alkaline solution.. This was the common method used to produce dye nowadays. In this experiment‚ dye produced was the orange II. Azo compound is compound that contain
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