Chromatographic Separation of Sodium Fluorescein and Methylene Blue In this two-part lab the students will: • Learn the techniques associated with thin layer and column chromatography. • Determine the effects of the stationary phase in separating a mixture by chromatography. • Determine the effects of the mobile phase in separating a mixture by chromatography. • Conduct a separation using column chromatography. In the first week‚ the students will determine the best solvent system for
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Is Mighty Exciting) Abstract In this experiment we investigate the properties of SLIME. Substitution of polyvinyl alcohol instead of Guar gum makes this experiment quite accessible. The Slime is prepared by mixing a solution of (Na2B4O7*10H2O) sodium tetraborate decahydrate (Borax) and H2O with a solution of polyvinyl alcohol (pva) and H2O. Then stirring for ~10 minutes to obtain the final product‚ SLIME. The product was examined and noted on the “non-Newtonian fluid” properties. Object The
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process components. Synthetic thread includes both monofilaments and multi-fiber filaments. Synthetic fibers and synthetic fabrics are made from a variety of materials and may feature a blended‚ fibrous structure produced by copolymerization. Acetate and triacetate fibers are shrink-resistant and wrinkle-resistant. Acrylic and modacrylic fibers are unique among synthetic fibers and synthetic fabrics because they have an uneven surface. Aramid and polyimide fibers are lighter and tougher than steel
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Title of Experiment Extraction of Spinach Date that the Experiment was Performed This experiment was performed on Wednesday‚ September 17th‚ 2014 at 2:45 pm in the St Ignatius Science Center Laboratory 323. Partners Names Taylor Jackson and Matt D’Angelo. Taylor‚ Matt‚ and I shared the same data. Purpose/Goals/Objectives The purpose of this experiment was for each student to use column chromatography to separate plant pigments from spinach leaves. Some goals and objectives were to
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250 ppm‚ 200 ppm‚ 100 ppm‚ and 25 ppm of 12C solution was prepared from a caffeine stock solution using ethyl acetate as the solvent. 250 µL of each dilution was added to a respective 0.6 mL vials with 50 µL of 13C and mixed. Next‚ three 15 mL centrifuge tubes were labeled as “Unknown A‚” three were labeled as “Unknown B” and one was labeled “Control.” To each tube‚ 4 mL of ethyl acetate and 1 mL of the respective unknown or control (100 ppm 12C solution) was added to the respective flasks. Each
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Synthesis The old acetate department located in an old four storey building follows a workflow that is heavily based on shifts/rotations because production is based on a per batch basis. A typical shift‚ the group leader and his crew would complete two or three batches. The night shift usually has lesser work because no deliveries were made. In the new system‚ the management wants to improve productivity. The department was redesigned from batches to continuous processing. Technical changes
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Synthesis of Isopentyl Acetate Abstract Isopentyl acetate was synthesized via a Fischer Esterification and purified via simple distillation. The yield was determined to be 25%. The identity and purity of the product was confirmed by comparison of the measured ultra-micro boiling point (140°C) to the published value (142°C).1 Chemical Equation Procedure Isopentyl alcohol (0.787 g‚ 1.2 mL‚ 8.93 mmol)‚ acetic acid (1.574 g‚ 1.5 mL‚ 26.20 mmol)‚ and sulfuric acid (0.368
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Lab 8: Isopentyl Acetate CHM 2211L October 22‚ 2014 Abstract Many esters are naturally occurring compounds that are responsible for the fragrance of fruits and flowers. Isopentyl Acetate is the compound responsible for the smell of bananas. However‚ when Isopentyl acetate is treated with H3O+ it will hydrolyze back into the carboxylic acid‚ which will change the fragrance. In this experiment 3.11g of Isopentyl Acetate were produced with a 51.92 percent yield. Introduction Esters are carboxylic
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Contents Page Design Situation……………………………………………………………………………………………………………………2 Design Brief…….……………………………………………………………………………………………………………………2 Limitations……………………………………………………………………………………………………………………………3 Design Specification…………………………………………………………………………………………………………..4‚5 Existing Products……………………………………………………………………………………………………………….6‚7 Justification of Existing Products.………………………………………………………………………………………….8 3 Design Ideas………………………………………………………………………………………………………………………9 Design No.1……………………………….……………………………………………………………………………………9
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Abstract Isopentyl acetate was synthesized in 44.9% yield through a reaction between isopentyl alcohol and acetic acid‚ with sulfuric acid as a catalyst. Identify and purity of the product was confirmed by infrared spectrum analysis of the product and the boiling point (141-142˚C) to the published value of (lit1142.5 ˚C). Procedure: Isopentyl alcohol (.893g)‚ acetic acid (2ml)‚ and concentrated sulfuric acid (4 drops) was added to a 5ml conical vial‚ and then attached to a reflux apparatus.
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