C6H5CH2OH2+ + HSO4- G C6H5COOH + NaOH C6H5COONa + H2O C6H5COOH + NaHCO3 C6H5COONa + CO2 + H2O H C6H5NH2 + HCl → C6H5N+H3Cl- 3. On the basis of solubility behaviour‚ determine the best solvent to differentiate the following pairs of compounds. a. CH3COOH (acetic acid) and CH3(CH2)5COOH The best solvent to use to differentiate acetic acid from heptanoic acid would be sodium bicarbonate (NaHCO3) as the stronger the acid‚ the more soluble it is in sodium bicarbonate. b. CH3CH2OCH2CH3
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from the dichloromethane layer‚ in which it is insoluble‚ to the aqueous layer‚ in which it is soluble. The unknown component will stay behind in the solution and can be isolated by evaporating the solvent from the dichloromethane solution. Adding HCl to the aqueous solution restores aspirin as an insoluble white solid. In the third experiment‚ the identity of the unknown component of Panacetin will be purified. Purification is necessary because the separation procedure
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College of Home Economics‚ Univeristy of the Philippines‚ Diliman‚ Quezon City 1101 Philippines ------------------------------------------------- ABSTRACT ------------------------------------------------- Alcohols react with hydrogen halides (HCl is used in this experiment) to yield the resultant alkyl halides and water. The insolubility of the alkyl halide in water allows the separation of it from the aqueous layer using a separatory funnel. The alkyl halide‚ then‚ were purified by a simple
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compound was ignited by a direct flame. Mixing Aqueous Solutions of Ionic Compounds Ionic Compounds Mixed Description of Reaction Chemical Reaction HCl + NaHCO3 Colorless‚ effervescing Yes (1) NaOCl + KI No reaction No (2) NaOCl + KI + Starch No reaction No KI + Pb(NO3)2 Bright yellow‚ cloudy‚ precipitate Yes NaOH + C20H14O4 Purple‚ pink‚ opaque Yes HCl + C20H14O4 No reaction No NaOH + AgNO3 Clear pink‚ brown precipitate Yes AgNO3 + NH4OH Milky white‚ cloudy precipitate Yes AgNO3 + NH4OH +
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burner‚ clay triangle‚ crucible and cover for the ignition test. The reagents used in this experiment are: copper nitrate‚ ethanol‚ ethanoic acid‚ diethyl ether‚ 5% HCl‚ concentrated sulphuric acid‚ litmus paper‚ acetic acid‚ sucrose‚ methylamine‚ benzoic acid‚ 5% NaOH‚ 15% HCl‚ butyl bromide‚ buteraldehyde‚ nitro phenol‚ propanone‚ 5% NaHCO3‚ and phenolphthalein. This experiment is quite simple but it requires proper handling of chemicals since the chemicals used are toxic. Moreover‚ this experiment
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Ether: Dipole – (induced) dipole and van der Waals forces For Acidic Compounds: Benzoic Acid – NaOH: Ion – (induced) dipole and van der Waals forces Benzoic Acid – NaHCO3: Ion – (induced) dipole and van der Waals forces Phenol – NaOH: Hydrogen Bonding‚ Ion – dipole‚ and van der Waals forces For Basic Compound(s): Aniline – HCl: Ion – dipole and van der Waals forces For Neutral Compounds: Benzyl alcohol – H2SO4: Hydrogen bonding and van der Waals forces Benzaldehyde – H2SO4: Ion – (induced)
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Section: Data Tables: Part 1: Chemicals Well No. Observations of the Reaction A. NaHCO3 + HCl A1 clear‚ bubbles B. HCl + BTB B1 yellow‚ clear C. NH3 + BTB C1 clear blue D. HCl + blue dye D1 green E. Blue dye + NaOCl E1 clear blue with the 1 drop of HCl green/blue F. NaOCl + KI A2 rusty-yellow with 1 drop of starch black G. KI + Pb(NO3)2 B2 yellow‚ not clear H. NaOH + phenolphthalein A3 purple‚ violet I. HCl + phenolphthalein A4 clear J. NaOH + AgNO3 D3 murkey‚ brown K. AgNO3 + NH3
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Carboxylic Acid A pre-weighed (0.315g) mixture of Carboxylic acid‚ a phenol‚ and neutral substance was placed into a reaction tube (tube 1). tert-Butyl methyl ether (2ml) was added to the tube and the solid mixture was dissolved. Next‚ 1 ml of saturated NaHCO3 solution was added to the tube and the contents were mixed separating the contents into three layers. Once this was completed the bottom layer was transferred to tube 2 using a pipette. Once in tube 2 the contents were washed with approximately 0
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bromide‚ ethanol sucrose‚ butyraldehyde‚ ethanoic acid‚ methyl amine‚ nitrophenol‚ diethyl ether‚ benzoic acid and propanone were used. It is found out that they are class X‚ Sn‚ S‚ N‚ Sa‚ Sb‚ S‚ N‚ A1 and Sn‚ respectively. We use water‚ ether‚ HCl‚ NaOH‚ NaHCO3‚ H2SO4‚ litmus paper‚ and phenolphthalein in classifying each compound based on their solubility and color change. It follows a certain scheme on testing the compound. Each test will link to another test until we ended up with the class of that
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Each set of chemicals was mixed as follows and the observations of the reactions were recorded in Data Table 1. A1) Two drops of NaHCO3 and two drops of HCl. B1) Two drops of HCl and two drops of BTB. C1) Two drops of NH4OH and one drop of BTB. D1) Two drops of HCl and two drops of blue dye. A2) Two drops of blue dye and two drops of NaOCl. One drop of HCl was then added. F) Two drops of KI and two drops of Pb(NO3)2. G) Two drops of NaOH and two drops of phenolphthalein. H) Two drops of
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