Aspirin

Synthesis of acetylsalicylic acid (Acetylsalicylic acerb) Objective: * To synthesize aspirin take salicylic Acid and acetic anhydride. * To calculate %yield of aspirin. Theory: * aspirin is the most common salicylate. It is an analgesic, antipyretic and anti-inflammatory drug that is practice in medicine nowadays. * The process involves mixing salicylic acid with acetic anhydride in a mixture while adding concentrated sulphuric acid (catalyst). * A devise in the temperature is observed indicating that the reaction is taking place. Upon the drop of this temperature the reaction is close to completion. * %yield = [mass(actual) mass( hypothetic) / mass( hypothetical)] x100 visual: 1. Erlyne Meyer Flask 2. Beakers 3. Spatula 4. Digital balance 5. Ice bath 6. sucking filtration apparatus 7. Funnel paper Procedure: 1. In an potential add 3g of salysilic acid. 2. Add 6mL of acetic anhydri de. 3. Add 10 drops of concentrated sulfuric acid. 4. Stir the mixture continuously for 10 minutes. (note the rise in temperature) 5. Add 50mL of cold water when the temperature decreases fully. 6. aplomb in ice and then filter using sucking filtration. 7. bet the mass of the aspirin.

Table of Data: Reagent| Molar bunch (g/mol)| Grams (g)| Moles (mol)| Salicylic Acid| 138| 3.06g| 0.022| Acetic Anhydride| 102| -| -| The limiting reagent is Salicylic Acid since in the science laboratory manual it was given that acetic anhydride is in excess. Therefore, the mass of theoretical Aspirin = 3.06g (1:1 ratio/stoichiometry) ! Calculations: n (salicylic acid) = m/MM = 3.06/138 = 0.22 mol * n (aspirin)theoretical = 0.22 mol m (aspirin)theoretical = 3.06 g Questions: 1. The dross most apparent present would be salicylic acid. If consumed by valet de chambre it would cause monetary value to the stomach and digestive formation due to high acidity. 2. The reaction that takes place in the eubstance: 3. The polymer...If you want to get a full essay, order it on our website: BestEssayCheap.com

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