recrystallization. We will then record the products’ melting point and calculate the yield in order to determine the degree of purity of the aspirin sample. Diagrammatic scheme for the reaction: OBSERVATIONS: When 5g of salicylic acid‚ 7.5 cm3 of ethanoic anhydride and 3 drops of concentrated sulphuric acid were mixed‚ a white milky solution was formed. This solution was heated and a yellow liquid formed. 75 cm3 of distilled water was added and the yellow liquid became cloudy with white precipitates visible
Premium Acetic acid Aspirin Acetic anhydride
FIITJEE Talent Reward Exam for student presently in Class 10 PAPER–1 Time: 3 Hours Maximum Marks: 214 Instructions: Caution: Question Paper CODE as given above MUST be correctly marked in the answer OMR sheet before attempting the paper. Wrong CODE or no CODE will give wrong results. 1. This Question Paper Consists of 7 Comprehension Passages based on Physics‚ Chemistry and Mathematics which has total 29 objective type questions. 2. All the Questions are Multiple Choice Questions having only
Premium Chlorine Delhi Oxygen
Amrita VISHWA VIDYAPEETHAM (University established u/s 3 of UGC Act 1956) Amrita Entrance Examination – Engineering PHYSICS‚ CHEMISTRY & MATHEMATICS Question booklet Version Code Question booklet no. Number of pages Number of questions Time 120 : 3 hrs Max. Marks : 360 Registration number Name of the candidate Signature of the candidate INSTRUCTIONS TO THE CANDIDATES GENERAL 1. Any malpractice or attempt to commit malpractice in the examination hall will lead
Premium Real number Maxwell's equations Hydrogen
solid is an odourless solid chemical that has a flake or leaf like appearance. It is also known as N phenylacetamide‚ acetanil or acetanilide. Its former trade name was antifebrin. As mentioned earlier acetanilide can be produced by reacting acetic anhydride with aniline. C6H5NH2 + (CH3CO)2O → C6H5NHCOCH3 + CH3COOH (http://www.mendelset.com/articles/680/preparation-recrystallization-acetanilide) (regensburg.de/Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/Grafik/box_brom_ar1.gif)
Premium Acetic acid Oxygen Ethanol
Aspirin‚ which is also known as acetylsalicylic acid. C9H8O4 is the chemical format for Asprin. The chemical structure of aspirin: Aspirin is anti-inflammatory. Aspirin is prepared by chemical synthesis from salicylic acid‚ by acetylation with acetic anhydride. The fact that it is an acid allows us to quantify the amount of aspirin in a solution. We would do this by by using an acid-base titration. Sodium hydroxide (NaOH) will be used In this experiment as the base. Preparation • Lab coats should
Premium Aspirin Salicylic acid Acetic acid
CH4300/PY5140 - EXPERIMENT 2 – Answer Sheet SYNTHESIS OF THE PHARMACEUTICAL ASPIRIN (ACETYLSALICYLIC ACID) Aim: The aim of this experiment was to react salicylic acid with ethanoic anhydride to produce Aspirin. CH3CO)2O + HOC6H4COOH → CH3CO2C6H4CO2H + CH3COOH i Mass: 5g Volume: 7.5 cm3 Mass: 6.52g RMM: 138g/mol RMM: 180g/mol Moles: 5/138 = 0.0362 RMM: 102g/mol Moles: 0.0362 OBSERVATIONS – First‚ Ethanoic acid was added to the salicylic acid which resulted
Free Aspirin Acetic acid Acetic anhydride
te‚ rr*‚.ktn Bachelor’s Degree Programme (BDP) ASSIGNMENT (For July 2013 and January 2014 Sessions) Foundation Course in English FEG-02 fiort:nn frWw&ffiL;qLq*s/jr lfirf Ff {)pr.f .s *4ry:Ffl r uNtvERsrlnl School of Humanities Indira Gandhi National Open LTniversity Maidan Garhi‚ New Delhi-l10068 FOUNDATTON COURSE rN ENGLTSH (FEG-02) Programme: BDP/201 3-l 4 Course Code: FEG-02 Dear students. You are required to do one assignment for the Foundation Course in English-02
Premium Acetic anhydride Medical tourism Medicine
LIDE Learning Center‚ Inc. 6539 Isabel‚ Leyte Synthesis of Aspirin An Investigatory Project Presented to: Edmundo A. Quiñones Chemistry Teacher In Partial Fulfillment of the Requirements In Science and Technology III (Chemistry) Presented by: Kenneth Ivan P. Durano Cyrill Val G. Lozano March 6‚ 2010 APPROVAL SHEET This investigatory project entitled “The Synthesis of Aspirin” requirement for Science and Technology III (Chemistry) has
Premium Acetic acid Aspirin Acetic anhydride
can be synthesised by reacting 4-aminophenol in acetic anhydride and this is often the first stage of preparing a medicine. This experiment aims to prepare a sample of paracetamol and assess its quality and purity as this need to be checked before it can be formulated into a medicine. 1.2 Method 5.10g of 4- Aminophenol was suspended in water‚ in a quick fit (QF) round bottomed flask in the fume cupboard as 4 – aminophenol is toxic. Ethanoic anhydride (toxic vapor) was added and mixed by swirling and
Premium Acetic acid Acetic anhydride Laboratory glassware
High Performance Liquid Chromatography Analysis of Aspirin Problem: Was aspirin (acetylsalicylic acid) successfully synthesized? Are there impurities or by-products present in the synthesized aspirin? How pure is the synthesized aspirin? Introduction: In the last experiment‚ aspirin was synthesized followed by characterization of the product using several different techniques. Melting point was a test that provided information about the identity and purity of the aspirin product. The iron(III)chloride
Premium Aspirin Salicylic acid Acetic acid