Abstract: The purpose of this lab is to synthesise acetylsalicylic acid (aspirin) by creating a reaction between acetic anhydride and salicylic acid. This was be accomplished through the use of recrystallization. Acetic anhydride and salicylic acid are mixed together‚ and then acidified by the addition of a few drops of concentrated sulfuric acid‚ which catalyzed the reaction. The percent yield is calculated to determine the effectiveness of the reaction in preparing the desired product (aspirin)
Premium Acetic acid Aspirin Salicylic acid
Aspirin Synthesis Introduction Out of all the pharmaceutical drugs in the worlds‚ aspirin is made the most. Any potential pharmacist must be familiar with synthesizing the drug. The goal of this lab is to synthesize as much pure aspirin as possible. The reactants‚ acetyl anhydride and salicylic acid‚ must react in phosphoric acid. With phosphoric acid as a catalyst‚ the reaction yields aspirin and acetic acid. The equation for the reaction is as follows: “(CH3CO)2O + HOC6H4COOH □(→┴yields ) CH3CO2C6H4CO2H
Premium Stoichiometry Reagent Aspirin
During my junior year‚ I was required to write a synthesis essay about a topic of my choosing. As a woman considering a career in science‚ I researched the gender bias in the science field‚ and why it’s so apparent today. I didn’t realize that I would uncover article after article of individuals undermining the female gender. Ivy League Presidents‚ men with doctorates in Biology‚ and individuals with no background in science alike spread false and harmful information about women. After
Premium
Effects of Differentiation on Enzymatic Activity Introduction HL-60 cells are capable of undergoing differentiation to induce different cell types. HL-60 cells can undergo morphological changes‚ changes in gene expression‚ and changes in protein synthesis. In the past weeks‚ we were able to conclude that HL-60 cells treated with DMSO and HL-60 cells treated with PMA will differentiate into granulocytes and monocytes upon treatment (1). We were also able to observe that both types of treated cells
Premium DNA Gene Gene expression
UNIVERSITY OF WATERLOO Department of Chemistry Synthesis of ACETAMINOPHEN Laboratory Report 1 CHEM 123L January 19‚ 2014 Prepared for: Dr. S. Stathopulos Department of Sciences‚ Chemistry Faculty University of Waterloo Teaching Assistant: Aaron Chan Prepared by: Section 001 Vithurjan Satkunarasan 20495383 Lab Partner: Ken Xu Introduction The synthesis of Acetaminophen is based on the amine group of p-aminophenol being acetylated by acetic anhydride to form an amide functional group
Free Melting point Chemistry Solid
A small amount of the unknown (approximately the tip of the spatula was used for all the pigments) was added into each clean dry test tube. For the first test 1 mL of 3 M of HNO3 was added. As soon as the acid came into with the solid‚ the pigment was observed to dissolve while also turning the solution into a pale clear colour. The same amount was used for the HCl reagent. As soon as the acid touched the pigment it yielded in a clear solution (solid dissolved after a few shakes). When the KI was
Premium Sodium hydroxide Chemistry Base
synthesised is only 67%-70% and a maximum 70% yield of ester usually is not considered to be acceptable for a synthesis reaction‚ instead it is considering as a poor yield of ester. The synthesised ester can only have a maximum yield of 70% because for ester in which the carboxylic acid and alcohol are sterically unhindered‚ a same ratio mixture of carboxylic acid and alcohol can only synthesis ester with a maximum yield of 70% ester as the reaction with the same ration of mixture will reach a state
Premium Acetic acid Oxygen Alcohol
Objective: The benefit of this lab was to acquaint oneself with the fundamentals of the Aldol Condensation reaction by demonstrating the synthesis of dibenzalacetone (trans‚ trans-1‚5-Diphenyl-1‚4-pentadien-3-one) through the aldol condensation of acetone with benzaldehyde. The synthesis began by using a strong base to generate the acetone enolate ion. The ketone/enol tautomerization is an equilibrium process that produces little of the enol (ppm or less). However‚ any enol that formed quickly reacted
Premium Carbonyl Aldehyde Aldol condensation
Medicine Analysis – Synthesising Aspirin results After recrystallisation differences between the crude and purified aspirin were noted. The impure (crude) aspirin was powered and fluffy with small clumps and was slightly yellow in colour whereas the pure aspirin has a less fluffy crystalline powder and was whiter. This showed distinct differences in the two substances but similarities were also apparent showing aspirin‚ in some level‚ was created. Before recrystallisation the crude aspirin could
Free Aspirin Carboxylic acid Purity
Synthesis As a representation of the culture of the time period‚ art enables its audience a sense of history and recollection. The pieces of work are timeless‚ precious‚ and irreplaceable‚ for they hold a significance that amazes all. Therefore‚ a museum that houses a collection of artifacts have employees who bear the responsibility of accurately securing and displaying works of arts or artifacts. When doing so‚ it is imperative for the these group of people who have the weight of the artifact’s
Premium Nazi Germany Adolf Hitler The Holocaust