The purpose of Module 11A was to test for the presence or absence of a particular set of functional groups through the use of wet chemical tests. In this manner‚ Unknown A which was a colorless solution‚ was first tested with 2‚4-DNP which after mixing for a few seconds formed a bright yellow precipitate. Although this confirms the presence of either a ketone or aldehyde group‚ one simple chemical test does not completely specify the presence or absence of other functional groups. Therefore‚ a second
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Purifying Acetanilide by Recrystallization Results: Acetanillide Solubility of acetanilide in water is 5.5g/100mL at 100C 0.53g/100mL at 0C PERCENT YIELD/THEORETICAL YIELD: Discussion: Acenatilide is a synthetic organic compound introduced in therapy in 1866 as a fever-reducing drug. Its effectiveness in relieving pain was discovered soon thereafter‚ and it was used as an alternative to aspirin. The solvent that I selected to recrystallize the
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TITLE: SEPARATION AND PURIFICATION OF ORGANIC COMPOUNDS AIMS: To isolate organic‚ inorganic and component from a given sample. To become acquainted with various separation methods. To examine the solubility behavior of the various compounds in a mixture using different solvents. INTRODUCTION A commonly used method of separating a mixture of organic compounds is known as liquid-liquid extraction
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701%‚ nitrogen contributed 8.843%‚ and carbon contributed 9.642%. Solubility is a chemical property referring to the ability for a given substance‚ the solute‚ to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium. It is important in predicting the parameters of the concentration of the drug in order to achieve the desired pharmacological
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Water • Define the terms solute‚ solvent and solution • Solute: Substances dissolved by the solvent (or the component present in a lower amount) • Solvent: Substances in which solutes are dissolved (or the component present in a larger amount) • Solution: A homogenous mixture of 2 or more substances • 1.1.2. Identify the importance of water as a solvent. • Water is distributed in the biosphere‚ lithosphere‚ hydrosphere and atmosphere • On earth‚ it is distributed as a solid‚ liquid and gas
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SynopsisThe objective is to determine the amount of Sulphate in anhydrous Barium Sulphate precipitate by gravimetric method. Gravimetric method is by the quantitative determination of the mass of anhydrous Barium Sulphate precipitate. Barium sulphate precipitate is form when Barium Chloride is added excessively to a hot given Sulphate solution slightly acidified with concentrated Hydrochloride acid. The white precipitate of hydrate Barium Sulphate formed is than digest‚ filtered out‚ washed and dried
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February 15‚ 2013 CHEM42 (Biochemistry) Laboratory ABSTRACT This experiment was performed to enlighten the researcher about the different properties and characteristics of lipids including its solubility and its complexity with regards to its components. The test for solubility tagged along the aphorism “like dissolves like” since coconut oil was dissolved in chloroform‚ ether‚ and carbon tetrachloride. The emulsification of fats in coconut oil was also conducted and the only the dilute
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master the ability to purify a solid compound. This form of purification technique is especially important in chemical identification‚ where the melting point of the compound is taken to confirm its purity. In order to perform recrystallization a solubility test much be completed. Four solvents (95% Ethanol‚ Petroleum Ether‚ Acetone and distilled water) were used to identify which one is an ideal solvent. An ideal solvent is insoluble in room temperature and soluble in hot solvent. 0.5mL of each solvent
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Selective precipitation of the Barium Magnesium Group Chem 112-004 Abstract The purpose of this experiment is to separate and identify the cations of Ba+‚Sr2+‚Ca2+‚ Mg2+ and NH4+ using differences in solubility and confirming test to identify the unknown solution used in this experiment. In this experiment the methodology used by the group is to perform the tests for both the unknown and the cations (Ba+‚Sr2+‚Ca2+‚ Mg2+ and NH4+) using the known as a control for comparison and identification
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a. The significance of the Extraction lab is to purify Acetanilide benzoic acid‚ 2-naphthol‚ and naphthalene by determining the partition coefficient. This value is determined by dividing the solubility of the given solute in the extraction solvent (Sodium bicarbonate or Sodium hydroxide)) by the solubility in the original solvent (Diethyl ether). III. Theory a. New Techniques a.i. Extraction a.i.1. Dissolve 1.082g of benzoic acid‚ 2-naphthol‚ and naphthalene mixture in 2mL diethyl ether. Extract
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