Separation Of Enantiomers
Enantiomers are chiral molecules that are nonsuperimposable, mirror images of each other and have same physical properties. However, enantiomers rotate different plane polarized light. The separation of enantiomers from a racemic ibuprofen—(S)-(+)-ibuprofen and (R)-(-)-ibuprofen—occurred from the transformation of enantiomers to diastereomers. Diastereomers formed because they are chiral molecules that are not mirror images and have different physical properties. When a racemic-(±)-ibuprofen reacted with (S)-(-)-α-phenethylamine, a base—sodium hydroxide—deprotonated the carboxylic acid in both enantiomers of ibuprofen and protonated the amine in (S)-(-)-α-phenethylamine, forming two diastereomeric salts. The (S, S) salt that is insoluble in
Unknown Compound
1525 Words | 7 PagesThe quantitative solubility of the unknown compound was determined to be 29/100ml. The known solubility of sodium sulfate is 28.11g/100mL water. Using the found solubility to compare to the known solubility of sodium sulfate. This solution created in the solubility test, the conductivity of the unknown compound was tested using an Ohmmeter to measure the resistance of the solution. Resistance is the measure of a substances ability to conduct
Acetaminophen Research Paper
1085 Words | 5 PagesStructural Features Acetaminophen is a molecule that is made of twenty atoms; its bonds consist of fourteen single bonds and four double bonds. Acetaminophen is also composed of clusters atoms with groups with names. First of all, part of an acetaminophen atom is a benzene ring. A benzene ring is a ring of six carbon atoms that are connected to each other by three double bonds and three single bonds and unusually all the bond are the same size. In addition, to make sure all the electrons in the outer valence are used the there are hydrogen atoms bonded to stabilize the carbon atoms.
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206 Words | 1 PagesSalinity is the measure of all the salts dissolved in water
Unknown Compounds
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Thin Layer Chromatography Lab Report
676 Words | 3 PagesWe were able to conclude that the crystals obtained from the K2HPO4 were aspirin since they both yielded a Rf value of 0.711. We also concluded the KOH crystals were acetaminophen with a shared Rf value of 0.504. Finally, we used TLC to determine the ether crystals were caffeine, yielding a shared Rf value of 0.209. We utilized how the three active components had varying Rf values due to the polarity of the compounds, with the lower Rf values corresponding to more polar molecules, in order to confirm the identity of our
Isolation In Ethan Frome
665 Words | 3 PagesHow a man goes about dealing with his past experiences portrays not only his character, but also his true inner self. This is especially true in Edith Wharton’s novel Ethan Frome. The main character, Ethan Frome, struggles with the consequences of his decision to marry his wife Zenobia following the loss of his parents. Ethan made this disastrous decision because of a feeling of obligation from societal pressure and ancestral conservatism. Wharton controls Frome like a puppet throughout the story displaying his perpetual contentions with his mistake-ridden marriage and uses it to power the novel as a whole.
Book Summary: Why The Poor Were The Salt Of The Earth
233 Words | 1 PagesAlso, salt is a preservative and by calling them the salt of the earth, one is basically saying they are preserving the earth, and are essential
Preparation Of L-Phenylalanine Lab Report
802 Words | 4 Pages“Diazotization of L-phenylalanine results in the unstable aliphatic diazonium salt 2, which is believed to undergo a rapid, intramolecular SN2 reaction to give the highly strained R-lactone (3) (3)”. “In a second, slower, intermolecular SN2 reaction, 3 reacts with the solvent (water) to open the lactone and yield the final product, (S)-2-hydroxy-3-phenylpropanoic acid (4)”. “Because this process occurs with two SN2 reactions, the final product has a net retention of configuration”. “This reaction has the added advantage of being environmentally friendly: the reaction is run in aqueous solution, using a safe amino acid and generates no hazardous waste requiring disposal”. “This experiment illustrates some important chemical concepts, including: Water solubility dependence on the state of ionization of a compound, Stereospecificity of the SN2 reaction, Measurement of optical activity, Effect of diastereotopic protons in the 1 H NMR spectrum”.
Second Order Reaction Rate Constant Of Ibuprofen With Atrazine Lab Report
1141 Words | 5 PagesAs the second order reaction rate constant of ibuprofen with HO• can be found in literature, and both first order ones will be estimated experimentally, the second order reaction rate constant of Acesulfame with hydroxyl radicals can then be estimated. In a similar manner, the calculations for the second pair of competition kinetics for HO•, Acesulfame and Atrazine (ACE, ATR) give: (Eq. 11) The same reasoning can be applied to the excited triplet state
Acetylsalicylic Acid Synthesis Lab Report
704 Words | 3 PagesLab Report 5: Acetylsalicylic Acid (Aspirin) Synthesis Name: Divya Mehta Student #: 139006548 Date Conducted: November 19th 2014 Date Submitted: November 26th 2014 Partner’s Name: Kirsten Matthews Lab Section: Wednesday 2:30 L9 IAs Name: Brittany Doerr Procedure: For the procedure, see lab manual (CH110 Lab Manual, Fall 2014) pages 96-98. Wilfrid Laurier University Chemistry Department. Fall 2014. Acetylsalicylic Acid (Aspirin) Synthesis.
Lab Report Scaffold: Bromination Of Trans-Cinnamic Acid
904 Words | 4 PagesThe product obtained was (2S, 3R)-2, 3-dibromo-3-phenylpropanoic acid and (2R, 3S)-2, 3-dibromo-3-phenylpropanoic acid, which are enantiomers. This was determined through melting point analysis. The melting point range for the product was 198 to 202 degrees Celsius, which is a lot close to the given melting point of the anti-addition product, 202-204 degrees Celsius. The given melting point range was 93.5-95 degrees Celsius. Furthermore, the syn-addition product is unlikely and difficult to produce due to stereochemistry selectivity.
How Does TDS Affect The Density Of Water?
528 Words | 3 PagesTDS is made up of inorganic salts, and a small amount of organic matter. Usually inorganic salts include calcium, magnesium, potassium, sodium as a cation (positive charged ions), and carbonates, nitrates, bicarbonates, chlorides, sulfates as an anion (negative charged ions). Those solids can pass through a filter with pores of around 2 microns (0.002 cm) in size. Therefore TDS is a measure of the amount of material dissolved in water.
Aspirin Lab Report
1524 Words | 7 PagesThe hydrolysis formed salicylic concentration which was mixed with iron(III) solution to form a purple complex. This was then use to study under the UV/Visible absorption spectroscopy which gave absorbance values recorded at 525nm to determine the concentration of salicylic acid using the Beer Lambert’s Law and later corrected to find the actual concentrations. The concentrations of aspirin at various intervals was found from salicylic concentrations. Upon plotting a graph of ln(aspirin) vs time, it produced a linear equation from which the gradient gave the rate constant of 0.0083min-1 and the overall shape of the graph concluding this reaction to be pseudo first order with respect to the concentration of aspirin with the deviations and improvements as
Hammett Constant And The Hydrophobic (Hansch) Substituent Constant
1027 Words | 5 PagesOnce this relationship has been determined, it is possible to predict the biological activity of related drug candidates before they are put through expensive and time-consuming biological testing. The electronic effects of a substituent have an effect on the ionisation or polarity of a drug. This in turn may affect how easily a drug can pass through
Essay On Solubility
1230 Words | 5 PagesSolubility of a Salt Introduction: The solubility of a pure substance in a particular solvent is the quantity of that substance that will dissolve in a given amount of a solvent. Solubility varies with the temperature of the solvent. Thus, solubility must be expressed as quantity of solute per quantity of solvent at a specific temperature. For most ionic solids, especially salts, and water, solubility varies directly with the temperature.
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