and purify cholesterol from egg yolks. Two hard boiled egg yolks were twice extracted with diethyl ether and methanol‚ with the filtrate collected via vacuum filtration. Potassium hydroxide pellets were added to the filtrate‚ the ether was distilled off‚ and the mixture was saponified by reflux. The crude cholesterol was isolated through a series of ether extractions and aqueous washes; then the ether was dried with MgSO4 and removed by rotary evaporation. The melting point of the yellow‚ sticky
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82ppm strongly indicates an ether functional group and the remaining peak at 170.53ppm is representative of an ester carboxyl functional group. In terms of the analysis for the H1-NMR‚ several peaks were present that mimicked the types of functional groups present in the C13-NMR. Such includes peaks from 0.4-1.5ppm that are representative of primary and secondary alkyl functional groups‚ and peaks at 3.921ppm‚ 3.899ppm‚ and 3.876ppm which are strongly indicative of an ether functional group. After
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0.1 kPa (@ 20°C) Vapor Density: 4.1 (Air = 1) Volatility: Not available. Odor Threshold: Not available. Water/Oil Dist. Coeff.: Not available. Ionicity (in Water): Not available. Dispersion Properties: See solubility in water‚ methanol‚ diethyl ether. Potential Acute Health Effects: Very hazardous in case of eye contact (irritant). Hazardous in case of skin contact (irritant). Slightly hazardous in case of ingestion‚ of inhalation. Inflammation of the eye is characterized by redness
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solute and the solvent. Compound 1 Compound 2 Intermolecular Forces Class S (Water-soluble) Compounds Acetone Water Hydrogen Bonding & London Dispersion Forces Diethyl Ether Dipole – Induced Dipole & London Dispersion Forces Ethyl Alcohol (Ethanol) Water Hydrogen Bonding & London Dispersion Forces Diethyl Ether Dipole – Induced Dipole & London Dispersion Forces Sucrose Water Hydrogen Bonding & London Dispersion Forces Class N (Neutral) Compounds Benzyl Alcohol Sulfuric Acid
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each structure; the functional group name‚ if different‚ is in parentheses. H N amine (amino) OH Br alkyl bromide (bromo) alkene (alkenyl) O O H aldehyde ketone (carbonyl) alkyne (alkynyl) O alcohol (hydroxyl) O N C nitrile epoxide ether O OH carboxylic acid (carboxyl) O Cl acyl halide (haloformyl) O O O O O O N H amide (carboxamide) anhydride ester carboxylic acid derivatives Solute molecules that experience strong intermolecular attractions to solvent
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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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with 25-mL portions of diethyl ether. The combined ether extracts were washed with five 25- mL portions of H2O‚ and then dried over anhydrous K2CO3. The ether portion was then decanted into a flask and chilled in an ice-water bath. A 2:10 (v/v) mixture of concentrated hydrochloric acid and 2-propanol was added dropwise with stirring to the flask until the contents were acidic‚ determined with pH paper. The final product was collected by vacuum filtration‚ washed with diethyl ether‚ and dried to yield
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Williamson ether synthesis of 2-octadecyloxynaphthalene 2.10.2014 J Patrick N Yap‚ s2667398 j.yap.1@student.rug.nl Abstract In this experiment is an organic reaction‚ forming ether from alcohol. Alexander Williamson discovered this reaction in 1850. Usually suitable either on the basis of availability or reactivity. The Williamson reaction is also frequently used to prepare an ether indirectly from two alcohols. One of the alcohols is first converted to a leaving group‚ then
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Exp.11) Identification of unknown ketones. Introduction: Given five samples of a known ketone derivative‚ the purpose of this experiment is to identify which unknown ketone derivative corresponds to the five known samples. In other words‚ using specific methods of compound detection‚ it is possible to match an unknown compound with a known compound because similar compounds will display similar characteristics. In this experiment‚ identification of the unknown ketone is accomplished through thin
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THE STUDY OF CHLOROPHYLL CONTENT IN VARIOUS PLANTS A Project Report Submitted by SANDEEP SETHI In partial fulfillment of the CBSE GRADE XII IN BIOLOGY AT 2015-16 CERTIFICATE This is to certify that Sandeep Sethi of grade XII‚ ST. XAVIER INTERNATIONAL SCHOOL‚ BHUBANESWAR with Registeration Number _______________________ has satisfactorily completed the project in Biology on STUDY OF CHLOROPHYLL CONTENT IN FIVE DIFFERENT SPECIES OF PLANTS‚ in partial fulfillment of the requirements
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