ether (very flammable‚ toxic) was added to the mixture and the test tube was shaked to dissolve the mixture. 3. Then the solution was transferred to the separatory funnel and 5 mL of 1M NaOH was added. It was cap tightly. The layers was mixed by swirling and shaking gently for 30 seconds. 4. Any pressure was vented by tilting the funnel and opening the stop cork. 5. The stop cork was closed‚ shaked and again vented. The mixture was held stand to allow the layers to separate. 6. The top layer was the
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Oil Spill Clean-up: Lab Report Description There are various methods for cleaning up oil spills. Some methods allow oil to be recovered‚ whereas others do not. Some methods are more expensive than others‚ some are more efficient than others‚ and some have more of an environmental impact. Regardless of the method used‚ cleaning up oil spilled on water is a very time-consuming and difficult task. In this activity‚ you will model various methods used for cleaning up an oil spill on water. Material
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Chem 253 Lab 1: Acid/Base Properties of an Antimicrobial Agent 09/03/13 Purpose The purpose was to determine the acid and base properties of the antimicrobial agent sodium benzoate. Theory Sodium has mainly been used in food processing to avoid growth of bacteria and harmful microorganisms. It is commonly used to preserve foods and beverages that have an acidic pH. Rather than benzoic acid‚ sodium benzoate is used because it is generally soluble in most aqueous solutions but benzoic
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solution - Used clamps to hold solution over heated water until the solution was completely dissolved - As the solution was in the heated water bath the color changed from white to clear when the water temperature was at 75 degrees C - Set up Buchner funnel with side arm flask for filtration - Pulled the solution out of the heat bath after about 10 minutes‚ the temperature reached 82degrees C - Placed solution on a cork ring to cool - Solution remained clear - I put the solution in an ice bath and
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pages 24-25 in the CH102 Lab Manual 2012 was followed with a few modifications as follows. Steps 6 and 7 were interchanged‚ that is‚ first 10cm³ of 3M aqueous sodium hydroxide solution was transferred to a separating funnel to which the distillate was added so that incase the funnel was leaking no distillate would be lost. Some changes were also made to step 12. Instead of gravity filtration using cotton wool‚ decantation was used to filter the cyclohexene into a pre-weighed conical flask. Data
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my group and I were constructing the roller coaster. I contributed by installing my funnel into the coaster. I did this by making adjusting the track so that it would lead the marble to the border of the tube. I did this because learned that when the marble spins around the edge of the tube‚ it increases the time which was what we wanted. After adjusting‚ I put supports on the funnel that would help the funnel maintain its shape to have the most maximum time possible. I also contributed by making
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Collecting Butane Gas The purpose of the lab was to determine the molecular mass of Butane‚ and this was done by using the ideal gas law (PV=nRT). The materials used were: match‚ funnel‚ bucket‚ cylinder‚ thermometer‚ lighter‚ scale‚ and a wooden flynt. These materials are used to help collect and test the Butane gas. Butane gas was used because it is ideal at standard temperature and pressure. Procedure: 1. Rinse bucket and fill three fourths full. 2. Rinse all glassware. 3. Place
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Abstract: Experiment 55 consists of devising a separation and purification scheme for a three component mixture. The overall objective is to isolate in pure form two of the three compounds. This was done using extraction‚ solubility‚ crystallization and vacuum filtration. The experiment was carried out two times‚ both of which were successful. Background Information: This experiment combined all the knowledge of the previous labs performed throughout the semester. An unknown mixture containing
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Introduction Methyl Salicylate has been used for a long time for its pleasant odour and flavour. The objective of this experiment was to carry an organic synthesis; the preparation of salicylic acid from methyl salicylate. To do an organic synthesis‚ it is needed to chemically modify the molecules of another compound to end up with the desire compound. Methyl salicylate is the major constituent of wintergreen oil‚ which is why it was used in this experiment as the starting material. The new technique
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The Technical Note 9 August 2006 OPRA tive Word Control of Insect Pests in Oil Palm; trunk injection procedures Charles Dewhurst INTRODUCTION TRUNK DRILLING REQUIREMENTS To control the insect pests of oil palm‚ the technique of trunk drilling and insecticide injection is the standard used by the oil palm industry and smallholder growers in PNG. 1. For the control primarily of sexava and stick insects. In PNG‚ trunk injection for controlling insect pests requires the close
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