Acid and Potentiometric Determination of its Purity and Dissociation Constant ------------------------------------------------- Abstract The purpose of the study is to synthesize salicylic acid from the ester‚ methyl salicylate‚ and determine the acid’s dissociation constant and purity. The ester was converted to salicylic acid by base hydrolysis. The products were refluxed and recrystallized‚ to ensure maximum purity‚ and filtered‚ dried‚ and weighed. The melting point of the product was determined
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experiment to be successful. Keywords: fruit flavors‚ banana flavor‚ acyl esterification‚ reflux‚ extraction‚ washing‚ drying‚ drying agents Introduction Esters are a group of organic compounds that give out distinct odors. Examples of esters are fruit flavors such as the product of this experiment. Isoamyl acetate or banana flavor is an ester which resulted from an acyl esterification between Isoamyl alcohol and Acetic anhydride. Acyl esterification is a reaction between acid anhydrides and acyl
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Wilkerson constructed. But I chose this book and Isabel Wilkerson intentionally‚ growing up in a rural‚ conservative area I was blind to much of what I see now. Due to The Warmth of Other Suns‚ I see more grey in places that used to be distinctly black and white. There is a deep yearning in me to be an
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suffering with not even a minimal amount of help. Next‚ Bystanders not only show a lack of compassion‚ but likewise/similarly‚ they show cruelty towards others who are in grave danger. In the short story‚ “And of Clay We Are Created”‚ by “Isabell Allende”‚ she shows a visible image in the reader’s head with her story by putting in page (22)“ He went to the Army field tents to offer relief in the form of vague promises to crowds of the rescued‚ then to the improvised hospital to offer a word of encouragement
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Abstract The purpose of this experiment is to synthesize isopentyl acetate via an esterification reaction between glacial acetic acid and isopentyl alcohol‚ using concentrated sulfuric acid as a catalyst. The product was washed using sodium bicarbonate and water‚ then dried with anhydrous sodium sulfate. It was then distilled using a standard simple distillation apparatus. The percent yield of isopentyl acetate was 60.39%. This may have been low due to incomplete distillation or evaporation once
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Pinnata seed oil is obtained after the mechanical extraction of rubber seed is using Soxhlet Extractor. The alcohol used in this research is methanol which is used to react with Pongomia Pinnata seed oil with a base or acid catalyst to produce methyl ester. Acid catalyst used in this research is potassium hydroxide (KOH) and base catalyst used is sodium hydroxide (NAOH). Parameter that concerned in this research is temperature and the ratio of alcohol and Pongomia Pinnata seed oil introduced in the microwave
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missing in their lives‚ to being truly whole. Lawrence uses images of darkness to illustrate the emotions of his characters. In "The Blind Man‚" Isabel goes to look for Maurice and when she steps into the stable where he is‚ "The darkness seemed to be in a strange swirl of violent life" (Lawrence‚ 132). The darkness that swirled around Isabel is the darkness in which Maurice lives. The "Horse Dealer’s Daughter‚" is also consumed in darkness‚ as seen in the description of the dwindling town.
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Aaron Papp Dr. Bell ENGL 1102 8 February 2013 Symbolism at Its Finest Many authors through time and through this day and age have used symbolism in their works. Critics may say there is too much symbolism in some works. There is never too much symbolism in a work. Symbolism enhances the characters‚ words‚ places‚ and objects to levels that a average work could not reach without the use of symbolism. The more symbolism an author uses‚ the more attached a reader becomes to the story. Look at August
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asked‚ “‘where is Miguel?’ … she shook her head in silence… they tied her head with another thong. Then she felt the atrocious pain that coursed through her body‚ filling it completely‚ and that she would never forget as long as she lived.” (409) Allende uses vivid imagery to describe the horrific torture that alba endures and to highlight the power of her love‚ as the soldiers are still unable to extract any information from her even
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Running head: HISPANIC IMMIGRANTS Hispanic Immigrants: Victims of Discrimination Kathleen Juarbe-Gorgas Professor Dettmann October 21‚ 2010 United States is the land of immigrants or the land of white people? Based on the U.S. history when Christopher Columbus discovers America‚ the Europeans start immigrant for better opportunities. The Native Indians was the owner of this land but the European took it over. As a consequence of the slavery‚ people from other countries
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