Recrystallization of Methyl 3-nitrobenzoate Santiago Horta‚ Daniella I School of Chemistry and Biochemistry‚ Georgia Institute of Technology Atlanta‚ GA 30332 Submitted: 18 February 2015 In this experiment‚ the product of a nitration will be purified by recrystallization using a selected solvent. Methyl benzoate is treated with nitric acid and sulfuric acid to obtain methyl 3-benzoate‚ which will be mixed with a solvent that will dissolve the product at its boiling temperature but not at
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different melting point expected for the pure compound and a broadening of the melting point range. Such an observation would indicates that a compound is impure. In experiment 3.2‚ 0.120g sample of benzophenone was obtained from stock and crushed into a fine powder. Two samples of the benzophenone were loaded into a capillary tube. The capillary tubes were then individually placed in a Mel-Temp apparatus where they were gradually heated at a steady rate of 1º/minute. The melting rate was manually
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For the first part of the experiment‚ it began by weighing 4.0ml of methyl salicylate into a flask—a stir bar was added. While stirring‚ 40ml of 6M sodium hydroxide was added and the solution was heated and boiled for about 15 minutes. After the 15 minutes‚ a bit of water was used to wash down the sides of the flask and the solution was cooled. It was boiled for another 15 minutes‚ after this the solution was cooled for 5 minutes in an ice water bath. While the flaks was in the ice bath‚ 50ml of
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Ma’am Rea Abuan Experiment # 1 SOLUBILITY OF ORGANIC COMPOUNDS State what types of intermolecular forces are present in solutions formed due to intermolecular attractions between the 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
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Special Report Methyl ethyl ketone – A techno-commercial profile M ethyl ethyl ketone (MEK or 2-butanone) is an organic compound with the formula CH3C(O)CH2CH3. Its CAS number is 78-93-3. The colorless liquid ketone has a sharp‚ sweet odour of butterscotch and acetone. It is produced industrially on a large scale‚ and also occurs in trace amounts in nature. It is soluble in water and is commonly used as an industrial solvent. With natural and synthetic resins‚ MEK produces solutions with low viscosity
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Properties of Alcohols and Phenols Experiment #3 Objectives: To observe the solubility of alcohols relative to their chemical structure‚ to perform chemical tests to distinguish primary‚ secondary and tertiary alcohols‚ and a color test for phenol. Introduction The general formula of an alcohol is ROH in which the R is an aliphatic hydrocarbon group. Alcohols may be looked upon as derivatives of water‚ HOH. One hydrogen of water is substituted by an alkyl group‚ R. Like water‚ alcohols show hydrogen
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Experiment 1: Solubility of Organic Compounds (Answers to Questions) Q1. State what types of inetmolecular forces are present in solutions formed due to intermolecular attractions between the solute and the solvent. A1. For Water-Soluble Compounds: Acetone – Water: Hydrogen bonding and van der Waals forces Acetone – Diethyl Ether: Dipole – (induced) dipole and van der Waals forces Sucrose – Water: Hydrogen bonding and van der Waals forces Ethyl alcohol – Water: Hydrogen bonding
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laboratory is to calculate the solubility of a substance under a variety of temperatures and construct a solubility curve based on experimental data to see the effect of temperature on solubility. Data collection and quantitative observation VOLUME H2O/ml/±0.05 TEMPERATURE/°C/±0.1 5.00 71.3 6.00 59.3 7.00 52.4 8.00 47.2 9.00 41.8 Mass of NaCl: 3.0±0.05 g Data Processing To calculate the solubility‚ we need to use the formula: Solving for x‚ the solubility of salt‚ we get the formula:
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concentrations of a miscible liquid (ethanol) on the solubility of KNO3 in water. The results of the investigation support the hypothesis that water‚ which exhibits greater polarity‚ is able to dissolve a greater mass of KNO3 at lower temperatures compared to tested concentrations of Ethanol ranging from 12.5% to 30%. Furthermore‚ the results of the graph 1 show correspondence to the dielectric constant of each solvent as both the starting solubility of the solubility curves and the dielectric constant of the
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Methyl Red Voges-Proskauer Test Questions A.What is meant by the term biochemical profile? Biochemical profile is a variety of biochemical tests. These various tests are used to measure the constituents of plasma and serum in blood. B.What metabolic end product does the MR test for? The metabolic end product MR tests for are the different bacteria’s related to their individual patterns of glucose metabolism. C.What does an orange color indicate as a result for an MR test? An orange color as a result
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