Introduction Extraction involves dissolving a compound or compounds either from a solid into a solvent or from a solution into another solvent. Extraction is a method used to purify a substance by removing the impurities that was added to it. A solvent- solvent extraction is a type of extraction that is most commonly done by using two substances that are typically insoluble with each other. An acid-base extraction is a solvent-solvent extraction‚ in almost every case one of the solvents is water
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Date: Lab Section: Selected Known Compounds Name Structural Formula Literature Melting Point Acetanilide C8H9NO 114.3°C Fluorene C13H10 116.5°C Experimental Data Sample Composition 1. 100% Acetanilide 2. 10% Acetanilide 3. 25% Acetanilide 4. 50% Acetanilide Fluorene 5. 75% Acetanilide 6. 90% Acetanilide 7. 100% Fluorene Melting Range 108-116°C 108-112°C 105-112°C 102-109°C 105-112°C 109-115°C 108-114.5°C Graph of Data Discussion of Results The purpose
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of this experiment was to oxidize an alcohol (9-hydroxyfluorene) to a ketone (9-fluorenone) using aqueous sodium hypochlorite (bleach) as the oxidizing agent‚ while introducing techniques used in microscale experiments. Reaction: Results 1. Recrystallized Product Yield Product yield = (actual yield/theoretical yield) x 100% 3mL 9-hydroxyfluorene x (1mL/1000mL) x (0.09 mol/L) = 2.7 x 10-4 moles 0.05g 9-fluorenone / (180.20g/mol) = 2.77 x 10-4 moles Product yield: (0.000277 mol/0.00027 mol) x
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yielding a 95.8% recovery rate. As for the organic compound‚ 0.166g of fluorene was secured and its respective melting point range was 116.0 C – 117.0 C. The identity of final acidic product was revealed through the comparison in melting points of the three known products. The melting point range matched up similarly with 3-chlorobenzoic acid. The experiment began with 0.210g of the mixture of an unknown acid and fluorene. The yield in products
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made me think that we did something wrong and our results would not be accurate. Crystallization: Part B: Start Finish % Recovery Expected Remaining Sulfanilamide 0.093g 0.059g 68.6% 0.034g Part C: Start Finish % Recovery Expected Remaining Fluorene 0.044g 0.018g 48.6% 0.026g Melting Points: Compound Literature Melting
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inhibiting enzymatic reactions involving para-aminobenzoic acid (PABA). PABA is needed in enzymatic reactions that produce folic acid which acts as a coenzyme in the synthesis of purine‚ pyrimidine and other amino acids. In part C‚ Fluorene was dissolved in three solvents. Fluorene(C13H10) is a polycyclic aromatic hydrocarbon. It forms white crystals that exhibit a characteristic‚ aromatic odor similar to that of naphthalene. It is combustible. It has a violet fluorescence‚ hence its name. For commercial
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Experiment II. Separation Of a Sample Mixture By Liquid-Liquid Extraction Reading assignment: Techniques in Organic Chemistry 2nd ed pages 75-99. 3rd ed pages 113-140. Topics and Techniques i) identification of solvent layers of two immiscible solvents ii) partioning of a compound between two immiscible solvents and determination of KD iii) liquid-liquid extraction with aqueous acids and bases with organic solvents. iv) use of drying agents Introduction Liquid-liquid extraction is a method
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for H. sp. KHS3. To our knowledge‚ most of the studies on Halomonas sp. focused on degradation of monoaromatic rather than polycyclic and heterocyclic compounds. We have demonstrated that H. sp. KHS3 has the ability to growth using phenanthrene‚ fluorene and naphthalene as the only carbon source. Similar ability has been demonstrated by
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and 3423 cm-1. The C=O was found at 1681 cm-1 and the C-O was at 1280 cm-1. The IR for benzoic acid also displays its significant bonds‚ O-H and C=O. The O-H was between 2566 and 3222 cm-1 and the C=O stretch was found at 1685 cm-1. The IR for 9-fluorenone did not show any significant bonds except for at 1681 cm-1‚ the C=O stretch. To separate 4-aminobenzoate into an aqueous layer‚ HCl was added to protonate the NH2 side group and form a salt‚ creating its high solubility in water and low solubility
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(separately!) combine your three samples of benzocaine‚ and combine your three samples of fluorenone. (If you misread this and mix everything together‚ no worries‚ you can just repeat the extraction to separate them again.) Now‚ one group is going to recrystallize the benzoic acid from water‚ one group is going to recrystallize the benzocaine from ethanol and water‚ and one group is going to recrystallize the fluorenone from
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