pipette‚ a 100mL graduated cylinder‚ a rubber stopper‚ chromatography paper‚ forceps‚ cuvettes‚ spinach leaves‚ hexane-acetone‚ acetone‚ and the spectrophotometer to record the wavelength. To start the experiment I first pipette 10mL of hexane-acetone into a 100mL graduated cylinder and put the rubber stopper on to prevent any of the solution from evaporating. While letting the hexane-acetone set I then prepared my chromatography strip but first cutting it to 20 centimeters and then cutting one
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the calcium chloride molecule. Solubility is also important for conductivity as some elements such as calcium chloride do not conduct in a solid state. This explains why calcium chloride conducted when dissolved in water and ethanol‚ but didn’t in hexane as it did not dissolve. Hence‚ the last concept faced in this experiment was the movement of ions or electrons which determine conductivity. In some conductivity results in table 7‚ a couple of results were extremely odd as no free electrons should
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characterization of isoamyl acetate‚ or banana oil‚ was determined. The synthesis was completed by a reversible esterification reaction which required the heating of glacial acetic acid and isoamyl alcohol‚ combined with a sulfuric acid catalyst in hexane. In order to increase the efficiency of the reaction‚ LeChatelier’s Principle is utilized by removing water from the products. As a result‚ the reaction as a whole shifts the left producing more isoamyl acetate to try and balance the reaction once
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There are many different binding modes of ligands to transition metal atoms. In past experiments with Co(II) and Co(III)‚ you observed that a ligand such as Chloride or amine can coordinate in a monodentate fashion. You also observed that carbonate occupies two sites of a transition metal and is known as a bidentate ligand. In this experiment‚ you will observe the reaction of a -bond in an olefin with a molybdenum metal center to form a piano-stool shaped molecule. The molybdenum metal retains
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RECRYSTALLIZATION Lem Therese D. Delos Ama‚ Glenn Dale M. Desquitado‚ John Carlos M. Drapesa‚ Arianne Valerie B. Escritor‚ Elisha Ellis R. Esteva Group 4 2B Medical Technology Organic Chemistry Laboratory ABSTRACT In this experiment‚ acetanilide was used as the pure organic compound. Acetylation of aniline and acetic anhydride yields the crude product or crude acetanilide. The crude acetanilide was purified by dissolving it in hot water and then the solution was cooled slowly by placing in
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thick white/yellow precipitate formed cloudy yellow precipitate formed REACTION W/ NH4OH does not dissolve; precipitate becomes defined does not dissolve; precipitate becomes defined does not dissolve TABLE 2: REACTION OF HALOGENS WITH HEXANE AND CHLORINE WATER REACTION NAF NABR KI COLOR OF THE TOP LAYER clear yellow pink IS THIS HALOGEN MORE OR LESS ACTIVE THAN CL? more less less TABLE 3: REACTION OF UNKOWN HALOGEN D WITH CA(NO3)2 AND AGNO3 REACTION USED TO
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Darlene Louise Estrada* and Rizhelle Evan Evaristo Department of Occupational Therapy‚ College of Rehabilitation Sciences University of Santo Tomas‚ Espaňa Street‚ Manila 1008 Date Submitted: February 2‚ 2011 Abstract: Organic compounds hexane‚ heptane‚ cyclohexane‚ cyclohexene‚ benzene‚ and toluene were subjected to different physical and chemical tests todifferentiate their intrinsic physical properties and chemical properties in terms ofstructure and behaviour. Nitration test (test
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of beta carotene and chlorophylls by column chromatography Upon the loading of S1 (the extract of the plant leaves in hexane)‚ a yellow band appeared at the top part of the silica column immediately after the solvent level descended to just above the sand layer. This yellow band later developed to about 2 centimetres long‚ and moved downwards almost as quickly as the eluent (hexane). This band was possibly beta carotene‚ as beta carotene is a non-polar molecule‚ and interacts well with the non-polar
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In this lab‚ we extracted spinach pigments‚ and analyzed what colors of light these pigments absorb. By using TLC plate‚ hexane and acetone‚ I separated the pigments of spinach‚ and discovered that the main pigments were green and yellow. This works because with different polarities‚ pigments move at different rates. Hexane and acetone were also used to separate chlorophyll and carotene from spinach. Since they are polar‚ they can separate organic and inorganic things. From the experiment‚ I know
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Mapua Institute of Technology School of Chemical Engineering and Chemistry Muralla St.‚ Intramuros‚ Manila Melting Point and Boiling Point of Organic Compounds Group No. 5 Manacup‚ Cris Vincent L. Oblena‚ Adrian D. Ong‚ Joshua Jyro B.* *Leader ABSTRACT In compounds‚ two of the physical properties affected by the varying structures are melting point and boiling point. Through the use of the Thomas-Hoover Melting Point Apparatus or the micro method‚ the melting and boiling point of
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