Determination of KHP – Acid - Base Titration For determining purity of unknown KHP‚ acid – base titration was used. Molarity of titrant in this case NaOH was standardized as 0.04958(±0.00011) M. Purity of unknown KHP was calculated as 35.88(±0.16) %. • Introduction Acid – base titration is typical method of determining unknown figures. Acid – base titration means that by using neutralization between acid and base. Abrupt changing of pH says whether procedure is done or not. pH indicators
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Reshmi Nair Title: Determination of Aspirin through back titration. Aim: To determine the concentration of Aspirin in a tablet using NaOH and Hcl. Research Question: What is the concentration of Aspirin in a normal tablet? Background: Aspirin is the general name for acetylsalicylic acid (ASA); it is also the trademark of the drug produced by Bayer in Germany. In eighty countries‚ aspirin is a registered trademark‚ but in other places the term aspirin refers to ASA by itself or as an ingredient
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Synthesis of Salicylic Acid Experimental Data: 1. Mass of methyl salicylate used: 0.232 g 2. Theoretical yield of salicylic acid: 0.211 g 3. Volume H2SO4 added‚ with units (drops or mL): 3mL 4. Mass of crude salicylic acid obtained: 0.250 g 5. Volume of water used as recrystallizing solvent: 2 mL 6. Mass of purified salicylic acid: 0.134 g 7. Percent yield of purified salicylic acid from reaction: 63.5% 8. Melting point of purified product: 158-160 oC 9. Name of NMR solvent used and
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Advantages: Sulfamic acid is the fastest de-scaler - It dissociates into hydroxonium ions more readily in aqueous solution than the others‚ therefore giving a greater concentration of atoms that are able to react with the calcium in lime scale. It is safe to use because it does not produce chlorine gas [5]‚ which can be toxic. Sulfamic acid also has a low volatility. Disadvantages: Sulfamic Acid can be an irritant to eyes or skin and is the most expensive of the de-scalers. Q2) How these de-scalers
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Composition Period 7 May 29‚ 2014 Mr. Fields The Great Melting Pot A melting pot refers to the idea that there are multiple races in America. Some people argue that there is or may not be a melting pot in America due to the perception of American actions. After reading and listening to both sides of the argument and explanations as to if America is or is not a melting pot‚ I’ve came to the conclusion that America is not a melting pot. Instead we are more of a of salad. Heres why!
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transported to the liver‚ where it undergoes conjugation and excretion. Upon its separation from albumin on hepatocyte membrane‚ bilirubin binds to specific carriers and is intracellularly transferred to the site where it conjugates with glucuronic acid to form bilirubin diglucuronide and bilirubin monoglucuronide. During this process‚ the insoluble form of bilirubin is converted into its soluble form‚ known as conjugated or bound bilirubin. Upon conjugation‚ the bilirubin from hepatocytes is excreted
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Determination of pKa James McDuffie ABSTRACT: In this lab‚ the pKa of unknown solution #4 was measured Introduction: This lab focused on the equilibrium constant‚ Ka. Ka is associated with chemical properties of acids. The equivalence point will be reached once the moles of OH- equal the moles of HA and once this point is reached‚ the PH changes very quickly. With the results‚ a titration curve should be produced. Experimental Section Materials and Methods: A buret with NaOH solution
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Our Iceberg is Melting is a story of penguins who are very comfortable with their present existence until a curious penguin named Fred discovered one day as result of curiosity that their iceberg was melting. The iceberg was the foundation of the penguins’ existence and without it they would perish. Fred had the courage to inform Alice who is a member of the Leadership Council about condition of the iceberg. Alice was a penguin who got things done and would listen to Fred. Fred had the opportunity
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Melting Pot Many cultures from different countries have come over to America and made it a “Melting Pot.” Each year in America‚ many immigrants come from different countries and shares their unique cultures with America. As Marin used the term Melting pot in his essay “Towards something American‚” it describes as an unused furnace that does not burn until imported values and lives stop being fed into the system; moreover‚ Marin mentioned that Americans have no culture. On the other hand‚ Taylor
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Lauric Acid Lauric acid‚ also known as Dodecanoic Acid‚ was discovered in 1849 by Marrsson T. It was first discovered in Lauraceae seeds‚ but it is also commonly found in soaps‚ vegetable oil‚ coconut oil‚ and breast milk. Lauric Acid is a clear‚ solid compound that is insoluble in water. It also comes in the form of a white powdery substance. The chemical formula is C12H24O2. It has a molecular weight of 200.32 g/mol. Lauric Acid also has a melting point of 44 C and a boiling point of 289.9
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