was synthesized from salicylic acid and acetic anhydride. In the reaction the hydroxyl group on the benzene ring in salicylic acid reacted with acetic anhydride to form an ester functional group. This method of forming acetylsalicylic acid is an esterification reaction. Since this esterification reaction is not spontaneous‚ sulfuric acid was used as a catalyst to initiate the reaction. After the reaction was complete some unreacted acetic anhydride and salicylic acid was still be present in the
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Acetaminophen Data: p-aminophenol: 0.150g Weight of crude acetaminophen 0.122g Weight of purified acetaminophen 0.060g Weight of crystallized acetaminophen 0.028g Melting point range for dried crude product 166.8-167.6°C Melting point range for final crystallized product 166.1-169.8°C Melting point range for pure Acetaminophen 169.5-171°C Results: After first isolation of crude acetaminophen‚ 1.22g of
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Indoor pollution sources that release gases or particles into the air are the primary cause of indoor air quality problems in homes. Inadequate ventilation can increase indoor pollutant levels by not bringing in enough outdoor air to dilute emissions from indoor sources and by not carrying indoor air pollutants out of the home. High temperature and humidity levels can also increase concentrations of some pollutants. It is stated in “1)edugreen.teri” that Air pollutants consist of gaseous pollutants
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CHM1002 Synthesis of Benzanilide and Methyl 3-Nitrobenzoate and the Identification of ‘Unknowns’ from Spectroscopic and Physical Properties James Lucas 10394308 23/11/12 Introduction In this series of practicals it was the aim to synthesise both Benzanilide and Methyl 3-Nitrobenzoate. Benzanilide was synthesised using The Schotten Baumann reaction which takes a hydrogen atom from an amino group and substitutes it for an acyl group. For Methyl 3-Nitrobenzoate
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Critically evaluate feminist explanations of female criminal behaviour. The involvement of females in crime and as the committers of crime was once a rare phenomenon but in recent years a dramatic increase has been seen all over the world. In England and Wales statistics have shown between 1994 and 2006 female crimes have steadily increased and have since continued to do so (MOJ 2009). Many sociological explanations and interpretations have arisen to coincide this surge in female offending as to
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Characterization of Saponifiable Lipids and Characterization & Isolation of Complex Lipids Jan Kevin Roxas‚ Nashiba Samad‚ Erickson Santos Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Lipids building blocks of different organic material that are water insoluble. This can be divided into simple and complex lipids that have several forms like waxes‚ triacylglycerols‚ phosphoacylgylcerols‚ sphingolipids‚ eicosanoids‚ isoprenoids and many other. To identify‚
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Catalysis: Midterm Review LECTURE 1: Sept 6th 2012 What is catalysis‚ Importance of catalysis‚ Industrial relevance‚ presentation of the course What is Catalysis: Catalyst: * catalyst is substance that increases the rate at which a chemical reaction approaches equilibrium‚ but is not consumed in the process * not reagent or product; noted above equation arrow * participates in kinetic equations‚ but not in eq constant Catalytic Cycle: * succession of chemical changes
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Explain how the changes in abiotic factors during a hydrosere control the changes in species that are present A hyrdrosere is a plant succession which occurs in a fresh water lake. In time an area of open fresh water will dry out forming woodland. During a hydrosere there are many abiotic factors that change‚ which causes different species to inhabit the lake depending on the conditions they need to thrive and live successfully. There are many different stages that occur during a hyrdrosere
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JFS: Concise Reviews in Food Science Concise Reviews and Hypotheses in Food Science Active Packaging Technologies with an Emphasis on Antimicrobial Packaging and its Applications P. SUPPAKUL‚ J. MILTZ‚ K. SONNEVELD‚ AND S.W. BIGGER ABSTRACT: In response to the dynamic changes in current consumer demand and market trends‚ the area of Active Packaging (AP) is becoming increasingly significant. Principal AP systems include those that involve oxygen scavenging‚ moisture absorption and control
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Effects of salinity on the survival of the Daphnia Introduction The Daphniidae daphnia is a freshwater crustacean from the branchiopod class that is common to most ponds‚ lakes‚ pools‚ streams and springs around the world. The water flea‚ as it is sometimes referred to‚ is very small in size growing to a length of less than ¼ inch‚ it has a flat back‚ a rounded belly‚ black round eyes and a pair of antennae (Kindersley‚ 2006). The Daphnia have leaf-like appendages used in respiration‚ filter
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