The Grignard Synthesis of 3-methyl-3-heptanol In this experiment‚ an example of an organometallic compound which has a carbon magnesium bond will be utilized to form a tertiary alcohol. Grignard reagents have been extremely useful in the synthesis of a large number of classes of organic functional groups. Although Grignard reagents are unstable and decompose in air and moisture‚ they can be prepared and used immediately with moderate difficulty in the undergraduate organic chemistry laboratory
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when the tornado began to shape itself. I looked in amazement as a funnel shaped entity made of wind and water arose from the pond. Luckily‚ the tornado evaporated before it could make its way to land and cause any damage. On the other hand‚ my other encounter was not as pleasing as the first. This time‚ age 17 now‚ I was driving home from my morning computer class when I spotted the tornado. It had already transformed into its funnel form and it had connected with the ground. As I drove quickly to
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The separatory funnel in the first extraction contains petroleum ether and 1-hexene in the organic layer and water and HBr in the aqueous layer. Between both layers‚ the catalyst‚ tetrabutylammonium bromide exists. Alkenes are immiscible with concentrated HBr and if the
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the sample bag containing the sucrose and record the mass of solid sucrose obtained by subtracting form the weight of sample bag and filter paper. 2. Separation of Aspirin Transfer the filtrate form the separation of sucrose to 100ml separating funnel and extract it with two 30ml portions of 5% sodium bicarbonate solution to form sodium acetyl salycilate which
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solvent extraction and purifying it by distillation began. The first step of purifying the ester was to add 100mL of water to the reaction mixture and transfer it to a 250mL separating funnel. A further 50mL of water was used to make sure all of the reaction mixture had been transferred to the separating funnel. The contents were swirled as well as making sure the pressure was vented using the venting procedure which was demonstrated‚ that is swirl the contents holding the lid with one hand and
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ring stand‚ funnel‚ water samples with CaCl2 (calcium chloride) Procedure: 1. Measure out a 20ml sample of each A‚ B‚ and C hard waters 2. Place samples in separate beakers 3. Add .500g of sodium carbonate to each water sample beaker (absolute maximum concentration is considered to be 180 mmole‚ so this amount of sodium carbonate will allow for such a number‚ if present) 4. Thoroughly stir until all precipitate has been formed 5. One sample at a time‚ place filter paper in funnel on ring stand
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done. Therefore‚ I will definitely be doing more research on this case to find out why Leroy Schad was given this punishment. Two figures that stuck out to me were the ‘criminal justice funnel’ and the ‘wedding cake’. Both of these were very interesting. When I reached the bottom of the ‘criminal justice funnel’ I was sort of shocked to see that the example started with a thousand serious crimes and ended with twenty-five incarcerated. This gave a bit of an idea of how the criminal justice system
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tablets to occur (once the aspirin tablets have been hydrolysed the solution turns yellow). The mixture was then cooled and was then transferred with care into a volumetric flask using a funnel. The conical flask was then rinsed twice with distilled water and the washings were transferred into the volumetric flask. The funnel was also rinsed with distilled water and the washings were transferred into the conical flask. The solution was then made up to the 250cm3 mark with distilled water and was shaken
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Self – Inflating Balloons Table of Contents 1. Purpose …………………………………… pg. 3 2. Background Information ………… pg. 4 3. Question …………………………………… pg. 6 4. Variable ……………………………………. pg. 7 5. Hypothesis ……………………………….. pg. 8 6. Materials & Procedures ………….. pg. 9 7. Data ………………………………………… pg. 11 8. Results …………………………………….. pg. 12 9. Conclusion ………………………………. pg. 13 10. Acknowledgements …………… pg. 14 11. Bibliography ……………………… pg. 15 Background Info When the two substances
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Persistent hyperplastic primary vitreous was first described by Reese in 1955 in his Jackson Memorial lecture.[5] In the embryo‚ the primary vitreous is formed during the first month of development and is supplied by the hyaloid blood system. Hyaloid artery generally begins to regress during the formation of the avascular secondary vitreous at around 9 weeks. Incomplete regression of the embryonic vitreous and the hyaloid vasculature leads to this entity.[4] PHPV is usually found in otherwise healthy
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