EXPERIMENT NO. 5 LIPIDS Sheena Grace Abainza (12-8116) Agatha Abella (12-8046) Danielle Quigao (12-8051) Jessa Mae Ramos (12-8049) February 15‚ 2013 CHEM42 (Biochemistry) Laboratory ABSTRACT This experiment was performed to enlighten the researcher about the different properties and characteristics of lipids including its solubility and its complexity with regards to its components. The test for solubility tagged along the aphorism “like dissolves
Premium Fatty acid Ester Solubility
OBSERVATION /DISCUSSION – The Philippine Atmospheric‚ Geophysical and Astronomical Services (PAGASA) said that there is a Low Pressure Area (LPA) that could develop into a tropical cyclone in the areas of Mindanao. Mindanao are still reeling from the effects of two powerful storm last month. The Philippine Atmospheric‚ Geophysical and Astronomical Services (PAGASA) are alerting all the residents in Compostela Valley and Davao Oriental to prepare for the moderate and thunder storms‚ they warn all
Premium Tropical cyclone Regions of the Philippines Provinces of the Philippines
objective was to convert a specific amount of salicylic acid into the same amount of aspirin that was high in purity. Furthermore‚ the other objectives were to enable students to conduct the synthesis of aspirin‚ reinforce skills or recrystallisation and the technique of melting point determination. The amount of each compound should be the same because there is a 1:1 ratio between them. The purity of the synthesized aspirin was measured by determining its melting point and percent yield. Soluble impurities
Premium Aspirin Acetic acid Carboxylic acid
Devices Other Equipment Procedure Synthesis of Aspirin Crystalizing the Aspirin Recrystallizing the Crude Aspirin Finding the Melting Point Range Safety Precautions Acetic Anhydride Sulphuric and Salicylic Acid Heating Observations Mass of Aspirin Synthesized Melting Point Calculations Percentage Yield Maximum Yield Crude Product Final Product Melting Range Percentage Error Crude Product Final Product Conclusion and Analysis Discussion Suggested Modifications to Procedure
Free Aspirin Acetic acid Sulfuric acid
b. Characterization of Aspirin B. Set – up Fig. 11.1. Suction Filtration Set – up C. Table 11.1 List of Necessary Chemicals Sample Structure Purpose Physical Properties Hazards Salicylic Acid Starting Material Appearance: white powder Molar Mass: 138.12 g/mol Melting Point: 1590C Boiling Point: 2110C Density: 1.44 g/cm3 Mildly irritating (pulmonary irritants). Harmful by inhalation‚ ingestion and through skin absorption. Acetic Anhydride
Free Aspirin Acetic acid Acetic anhydride
Synthesis of Aspirin Chemistry Standard Level Lab Report Data Collection and Processing and Conclusion and Evaluation Date: December 8th‚ 2011 Purpose: The purpose of this lab was to synthesize aspirin‚ determine the theoretical yield‚ compare the percent yield to the theoretical yield and test the purity of aspirin by adding Iron (III) chloride to the product. Hypothesis: I hypothesize that salicylic acid will react with acetic anhydride to produce acetylsalicylic acid (aspirin) and
Premium Aspirin Acetic anhydride Acetic acid
Once the aspirin is prepared‚ it is isolated from the reaction solution and then it is purified. The aspirin is insoluble in cold water‚ and it is isolated by filtering the chilled reaction solution. Purification is essential to remove any unreacted salicylic acid and acetic anhydride as well as the acetic acid product and phosphoric acid. Acetic anhydride is caused to decompose by the addition of water once the formation of aspirin is complete. C4H6O3 (Acetic anhydride) + H2O (Water) ------------------------->
Free Solubility Chemical substance Oxygen
Lab 1: Synthesis of Aspirin Introduction: The purpose of this lab was to demonstrate the ability to easily alter the molecular structure of a compound to greatly increase its utility. In this case‚ an acetyl group was added to salicylic acid‚ a naturally occurring compound with significant pharmaceutical value. Without the addition of the acetyl group‚ salicylic acid is an irritant to the gastro-intestinal (GI) tract. Once the acetyl group is added via a simple reaction‚ acetylsalicylic
Premium Oxygen Aspirin Acetic acid
of examples review current advertisements banned by the ASA. Critically analyse the rules imposed by the ASA‚ are they reflective of public demand. ASA are the UK’s independent regulator of advertising in all media. They ensure that the ads being produced are legal‚ decent‚ honest and truthful by using the advertising codes and by seeing if the ads meet their regulations. Referring to the L’Oreal foundation make up advertisement‚ ASA decided that it was socially responsible for them to ban
Premium Advertising Cosmetics Deception
sodium (sodium salicylate) and acetyl chloride‚ creating acetylsalicylic acid. In 1897‚ Felix Hoftmann invented acetyle salicylic acid (ASA) for Bayer – a formulation of salicylic acid which did not have the unpleasant side effects of its predecessor. The person in charge of Bayer’s testing laboratories shelved this new drug for two reasons. Initial test on ASA were not
Premium Aspirin Salicylic acid