Synthesis of Aspirin (Acetylsalicylic Acid) Abstract: This experiment is about the synthesis of aspirin under laboratory conditions. Aspirin is prepared by reacting salicylic acid and acetic anhydride; in the presence of sulfuric acid. After fully dissolving the salicylic acid with acetic anhydride‚ the solution is cooled and cold water is then added. Once the crystals form they are then filtered and left to dry out. There mass is measured and recorded then the yield is calculated. Introduction:
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Procedure The procedure stated in Chem 2120 experiment 6 Williamson Ether Synthesis of Phenacetin laboratory manual was followed without any major changes. Data and results Compound Amount used MW (g/mol) Moles Stoichiometry/Comments acetaminophen 0.354 g 151.16 2.34 x 10-3 limiting reagent ethyl iodide 0.3mL 155.97 3.75 x 10-3 1.6 equiv ’s sodium ethoxide 2.6mL 68.05 3.3 x 10-2 catalyst‚ reaction solvent crude product obtained: phenacetin 0.32g
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YOUR NOTES UNIT 2 NOTES DNA (deoxyribonucleic acid) DNA Functions • Stores genetic information and copies itself (replication) to pass on the information • Contains genes (instructions to make proteins) • Instructs cell’s activities DNA Structure • DNA is a polymer of nucleotides • Chromosomes (DNA strand + associated proteins ie. Histones wrap DNA around like a spool = condensed chromatin) ↓ genes (sections of a chromosome that codes for a protein) ↓ nucleotides (3 parts:
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Racism can be “defined as the hatred of one person by another or the belief that another person is less than human because of skin color‚ language‚ customs‚ place of birth or any factor that supposedly reveals the basic nature of that person. It has influenced wars‚ slavery‚ the formation of nations‚ and legal codes” (“What”). The face of racism over the past 50 years has changed but yet‚ some still stay the same. People made laws against racism and it is not as blunt anymore. But opinions and stereotypes
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Preparation of Fruit Flavors (Pear) Abstract. In this experiment an assigned Ester is prepared‚ particularly n-Propanol. The Preparation was done via Fischer reaction. In this reaction‚ a reflux set-up is required. The reflux set-up was used in the liquid-liquid extraction. After adding an immiscible solution to the compound containing n-Propanol‚ the mixture now will have two layer: the Organic and Aqueous layer. The organic layer is the extract needed and its % yield is computed resulting to
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Experiment # 3 Acetylsalicylic Acid Introduction: The purpose of this experiment is to create and isolate pure acetylsalicylic acid from the substances salicylic acid and acetic anhydride. Then one will find the melting point to determine purity. Procedure: Make a hot bath. Weigh some salicylic acid and place in conical vial. Add .480mL of acetic anhydride and a drop of concentrated phosphoric acid. Drop in a magnetic spin vane and attach air condenser to vial. Partially submerge it in
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“The Girl Who Was On Fire” Throughout history‚ one of the most prominent issues in society is the way gender plays its role. Women have always been cast aside as being the weaker one‚ being too emotional‚ while men‚ on the other hand‚ are the strong ones‚ who need no help and can do everything by themselves. This is why‚ in The Hunger Games‚ Katniss Everdeen is such a role model for women everywhere. She is the perfect mixture of a young woman who can act just like “the guys‚” yet‚ at the same
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In modern society‚ global warming is one of the most serious problems causing unrest all over the world. Global warming has been blamed for a host of recent worldwide issues‚ such as an increase in the number and severity of hurricanes‚ higher temperatures and droughts‚ and various other environmental changes. Thus‚ countermeasures to cope with the aggravating global warming are urgent questions in the present day. To deal with the problem of global warming‚ many nations and organizations are making
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Individuals control their lives through the rights and personal freedoms. The natural state of humanity promotes personal freedom and rights with the demand of peace. They are born inherently good and in a “state of perfect freedom.”1 The law of nature is the primitive law of life that creates personal rights. The law of nature protects people’s freedoms and keeps them under a code. While individuals are born inherently good‚ moderate greed is included in the law of nature as a way for “[man] to
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Advancement in Technology Technology is a word that is used to describe advancements‚ knowledge‚ creations‚ and abilities. Every day Technology continues to grow allowing our society to advance in the way we live our lives. Advancement in technology has created people in society to become more knowledgeable while allowing distractions to their everyday life. Technology such as the Internet is a tool that society uses in their everyday life. The Internet is interactive and can provide endless
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