Final Year Project Progress Report Title: Fat Content Analysis and Characterization of Food Class and Group No. : AS114103/2A1 Student Names : Chan Hoi Ching (120586347) : Chan Wai Yi (120464356) : Cheung Kit Cheung(120552694) : Lam Chi Ching (120224281) : Lam Pik Shan (120181829)
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tetraiodide during recrystallization. Experimental method1 Approximately 2.50g iodide and 1.01g tin were weighed on a balance and were placed in an Erlenmeyer flask. Approximately 10ml toluene was added to the flask. The mixture was heated on a hot plate at almost boiling temperature and was stirred using a stirring rod till the purple color in the flask faded. The solution was gravity filtered to remove solid impurities. The filtrate was set aside to cool to room temperature and was set in an ice
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Layer water on top of the resin with minimal disturance to your sample solution (about 30 mL of water is needed to wash the sample through the column). 9. Collect the sample in an Erlenmeyer flask. a. Replace waste beaker with a clean Erlenmeyer flask. b. Open screw clamp and collect the effluent in the Erlenmeyer flask. c. Control the flow rate to prevent the sample from becoming too spread out on the column‚ and adjust the flow so that the effluent is dripping out at the rate of one or two
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below. Chemical Reactions: a.) HCl and Na2CO3 = 2NaCl + CO2 + H2O b.) KHP and NaOH = KNaP + H2O Experimental Procedure: 1. Get an Erlenmeyer flask (250 mL) and add 100 mL of distilled water to it. 2. Weigh .15 of NaCO2 and add it to the distilled H2O. 3. Now add .5-1 mL of bromocresol to the flask. 4. Fill up the buret with HCl 5. Let the buret drip into the flask until the color turns green then stop buret. 6. Once it is a green color place it on a burner to boil it‚ add stir bar so it keeps the
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Jolyne Piet CHM-221L-02 Lab #2: Experimental Design Isolation of Sucrose: 3.01 g Panacetin were weighed in a 125-mL Erlenmeyer flask‚ and 51mL dichloromethane were added to partially dissolve the Panacetin. The insoluble portion was gravity filtered and air dried to yield 0.45 g of sucrose (15.0 % of original Panacetin). Isolation of Aspirin: The organic filtrate was extracted through a separatory funnel with 32 mL 5% sodium bicarbonate to produce an aqueous layer and a dichloromethane layer
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The first part was the preparation of 250ml of 1.0 M sodium hydroxide (NaOH) solution from a solid. Using a top-loading balance‚ ____ g of NaOH was transferred to a clean Erlenmeyer flask. Distilled water was then added until the solid was completely dissolved. The solution was transferred to a 250ml volumetric flask and mixed. Once mixed‚ the solution was bulked to the mark and mixed again. Finally‚ the solution was transferred to a clean plastic bottle and labeled. The second part was
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125 mL Erlenmeyer flask. 25 mL of deionized water were then added to the 125 mL flask and stirred with the K2C2O4 until complete dissolution was achieved. Next‚ 4.11 grams of FeCl3 were weighed out using the balance previously mentioned. Once the 4.11 grams were measured‚ the FeCl3 was placed in a 150 mL beaker. Then 10 mL of deionized water were added to the 150 mL beaker and stirred with the FeCl3 until complete dissolution occurred. The oxalate solution (K2C2O4H2O) from the 125 mL Erlenmeyer flask
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Title: The Green Oxidation of Borneol to Camphor Date Conducted: February 8‚ 2012 April 27‚ 2012 Abstract: The goal of this experiment was to perform a Green Oxidation of Borneol to Camphor‚ without the use of Chromium synthesis since it is toxic to the environment. Reagent Table: |Chemical Name |Amount used |Molecular weight |Concentration |Density g/mL |BP °C |MP °C |Chemical Formula
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spatula 6 125-mL Erlenmeyer flasks Size 2 rubber stopper Stirring rod 10-mL graduated cylinder 25-mL beaker Procedures: 1.) Measure out 5 mL of NaClO into a 125-mL Erlenmeyer flask 2.) Add 95 mL of distilled water to the flask 3.) Mass out 2 g of solid KI 4.) Transfer 25 mL of the diluted NaClO in the flask to another 125-mL Erlenmeyer flask 5.) Repeat step 3 and 4 for two more times 6.) Label the flask: Trial 1‚ Trial 2‚ Trial 3 7.) Add 2 g of solid KI to the Trial 1 flask 8.) Swirl the
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finely powdered potassium hydrogen tartrate into 250.mL beaker. (2) Add 150.mL of distilled water and stir well. (3) Using a vacuum filtration‚ filter the solution into a clean‚ dry Erlenmeyer flask with a side arm. (4) Record the temperature of the filtrate. (5) Pipet out 25 mL of (4) into a 250.mL Erlenmeyer flask. (6) Put ~3 drops of phenolphthalein indicator to (5) (7) Prepare a buret with ~0.04M NaOH solution. (Make sure to write down the actual concentration.) (8) Titrate (7) with NaOH
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