EXPERIMENT 5 GAS DIFFUSION COEFFICIENT OBJECTIVES: Determine the gas diffusion coefficient of acetone using the established Winkelmann’s method KEYWORDS Diffusivity‚ Gas Diffusion Coefficient‚ Winkelmann’s method OVERVIEW The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the transformation and distribution of these materials in bulk. One such property is diffusivity. Mass transfer by diffusion takes
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g 86.64% Solubility of Precipitate ion [Cu(NH_3 )_4 ]SO_4*H_2 O+Solvent Observation of Solubility [Cu(NH_3 )_4 ]SO_4*H_2 O + Acetone When the precipitate ion was added to ~1 mL of acetone there was a strong property of insolubility. Even when a stir rod was used to mix the precipitate in the acetone‚ the precipitate remained un-dissolved in the solvent. [Cu(NH_3 )_4 ]SO_4*H_2 O + DI Water When the precipitate ion was added to ~1 mL of DI water‚ the precipitate
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Jessica Robins Lab 3: Properties of Organic Compounds Introduction Distillation is a physical process used to separate chemicals from a mixture by how easy they vaporize. The temperature rises unit it reaches the temperature of the lowest boiling substance in the mixture while the other contents of the mixture remain in their original phase (until the most volatile substance has all boiled off) as it’s heated. Hot vapor results and passes into a condenser and is then converted to a liquid
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separate test tubes. Acetone was added. Using forceps‚ the strips of chromatography paper were "washed" of their pigment. Lastly the absorption spectrum‚ the absorption pattern for a particular pigment‚ was measured. Treatment: wavelengths of 400‚ 440‚ 480‚ 520‚ 560‚ 600‚ 640‚ 680‚ and 720 Control: Acetone with no pigments Replication: This investigation did not institute replication Materials: paper‚ writing utensils‚ capillary tube‚ leaf pigment extract in acetone‚ beakers‚ forceps‚ scissors
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various alkyl halides under Sn1 and Sn2 conditions. We will be examining Sn2 reactions with the Finkelstein reaction. The conditions for this are NaI in acetone. NaI is soluble in acetone but the products of the reaction; NaCl and NaBr are not. We will watch the reaction by looking for the first appearance of the solid salts. Acetone is a good solvent for Sn2 reactions because it is a polar aprotic solvent. We will be examining Sn2 reactions with an ethanolic solution of silver nitrate
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Schiff’s Test – Test for aldehydes * Purple solution * Formalin - positive * Acetone (ketone) * Benzaldehyde – positive * Acetophenone (aromatic ketone) * Tollen’s Test – Test for aliphatic and aromatic aldehydes * Silver mirror * Formalin – positive * Glucose – positive * Benzaldehyde – positive * Acetone * Fehling’s Test – Test for Aliphatic aldehydes * Brick red precipitate (cuprous oxide)
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carotenoid pigments by using acetone as the solvent. The chlorophyll and carotenoid pigments were extracted by using column chromography and alumina was used as the solvent. Solvents of different polarities were used‚ starting with the least polar‚ to extract the certain components from the leaves. They were then analyzed by using thin- layer chromatography. Procedure: The first part of the experiment dealt with breaking down the spinach leaves in a mortar and pestle. Acetone was added to this to help
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features. So‚ it can form complex ions readily. Apparatus and Materials: Measuring cylinder‚ suction filter‚ measuring cylinder‚ beaker‚ conical flask‚ petri dish‚ glass rod‚ copper(II)nitrate‚ water‚ ammonia‚ acetyl acetone Procedure: 1. 6g of Copper(II) nitrate (Cu
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3. Transfer the 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
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polystyrene dissolves in the acetone‚ the air in the foam is released‚ causing it to look like you’re dissolving this massive quantity of material into a small volume of liquid. You can see a less-dramatic version of the same effect by dissolving other polystyrene items in acetone. Common polystyrene products include disposable razors‚ plastic yogurt containers‚ plastic mailers and cd jewel cases. The plastic dissolves in just about any organic solvent‚ not just acetone. Acetone is found in some nail polish
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