following are chemical tests that we will use in this class. Some cover two related functional groups (such as the bromine test for alkenes and alkynes)‚ while other only a specific subcategory of that functional group (such as the iodoform test for methyl ketones). In some cases there can be false positives (compounds which do not have the functional group still give a result test) or false negatives (compounds which have the functional group give a negative result). If your results do not match
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Experiment #6: Colorimetric Determination of pH Almira‚ Faerie Carleen Lucile L. Gallardo‚ Charlotte O. Group #6‚ Chemistry 18.1‚ MHEG1‚ Ma’am Arlou Angeles September 23‚ 2013 I. Abstract The acidity of the four unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of
Free PH PH indicator Acid dissociation constant
get citral because its distillation occurs below the boiling point of water. Adding t-butyl methyl ether to the distillate and shaking creates a distinct layer separation which when dried leaves purified citral. Materials and Equipment: Spatula‚ syringe‚ syringe needle‚ short-neck round bottom flask‚ digital thermometer‚ pipette‚ pipette bulb‚ ice‚ lemongrass oil‚ beaker‚ electric hot plate‚ t-butyl methyl ether‚ saturated sodium chloride‚ anhydrous calcium chloride‚ stopper‚ boiling chips‚ sand
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Analysis of Soda Ash and Volumetric Analysis of a Carbonate-Bicarbonate Mixture Buti‚ Mary Daphne A. Department of Chemical Engineering‚ Faculty of Engineering University of Santo Tomas España‚ Manila Abstract Sodium carbonate (Na2CO3)‚ commonly known by trade name soda ash‚ is a white‚ anhydrous‚ powdered or granular material that is an essential raw material used in the manufacturing of glass‚ detergents‚ chemicals‚ and other industrial products. In this experiment‚ the percent alkalinity
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potentially hazardous technology to the developing countries. Even after 20 years‚ Bhopal has not recovered. In this article‚ we present what happened and why and what lessons can be learned at this terrible cost. Keywords: hazards; green revolution; methyl isocyanate; multinationals; pesticides; poisonous gas; safety failures; Union
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Reminder: These notes are meant to supplement‚ not replace the laboratory manual. SN1 Reaction Notes Background and Application Substitution Nucleophilic First Order (SN1) reactions are one of the most common type of organic reactions. SN1 reactions can be used to make a wide variety of new compounds. In this experiment‚ t-amyl alcohol will be converted by a SN1 mechanism to 2-chloro-2-methylbutane. Safety Precautions Concentrated Hydrochloric Acid is 12M. It will cause visible destruction
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sulfanilamide was dissolved in the mother liquor‚ and also because of a small spillage of the crystals from the filtration step. Part C of this lab was performed by first finding the best solvent for Fluorene. This was done by testing water‚ toluene‚ and methyl alcohol by adding 6mL of solvent to .3g of Fluorene. It is then shaken‚ if it dissolves immediately like it did
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School of Medical Sciences‚ Bristol BS8 1TD and 2Eli Lilly and Co.‚ Erl Wood Manor‚ Windlesham‚ Surrey GU20 6PH Keywords: Abbreviations: 1 Three novel phenylglycine analogues; (RS)-a-methyl-3-chloro-4-phosphonophenylglycine (UBP1110)‚ (RS)-a-methyl-3-methoxy-4-phosphonophenylglycine (UBP1111) and (RS)-a-methyl-3methyl-4-phosphonophenylglycine (UBP1112) antagonised the depression of the fast component of the dorsal root-evoked ventral root potential induced by (S)-AP4 with apparent KD values of:
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Acetaminophen was found to be the second most polar analgesic drug tested. Acetaminophen contains a polar alcohol group on one side and amide group on the other but also includes non-polar functional groups that consisted of the benzene ring and methyl group. Acetylsalicylic acid low polarity results from only containing a carboxylic acid and ester and the presence of alkenes in the benzene ring. Ibuprofen was the least polar out of all analgesic drugs because it only contains one carboxylic acid
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However‚ the formation of the oximes and various oxime products resulted in an incredible conformational inversion for the ethyl‚ isopropyl‚ and methyl systems. Furthermore‚ through the analysis of vicinal interproton coupling constants‚ it is believed that these compounds exist mainly in the diaxial chair conformation. To verify this‚ an X-ray crystallography was carried out‚ and the result undeniably
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