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1. Deduce a suitable title and aim for this experiment 2. Mention three errors that can be done during the experiment and how they can be circumvented 3. What is the significance of the acid during the experiment? 4. What experiment can be conducted to purify the obtained product? Outline a simple procedure on how you will carry out the experiment. Answer should be in point form, it should be concise and easy to follow

1. Deduce a suitable title and aim for this experiment 2. Mention three errors that can be done during the experiment and how they can be circumvented 3. What is the significance of the acid during the experiment? 4. What experiment can be conducted to purify the obtained product? Outline a simple procedure on how you will carry out the experiment. Answer should be in point form, it should be concise and easy to follow

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
Section: Chapter Questions
Problem 120QRT
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09:34 ( HPSG032 Introduction Aspirin is the common name for the compound acetylsalicylic acid, widely used as a fever reducer and as a pain killer. Salicylic acid, whose name comes from Salix, the willow family of plants, was derived from willow bark extracts. In folk medicine, willow bark teas were used as headache remedies and other tonics. Nowadays, salicylic acid is administered in the form of aspirin which is less irritating to the stomach than salicylic acid. To prepare aspirin, salicylic acid is reacted with an excess of acetic anhydride. small amount of a strong acid is used as a catalyst which speeds up the reaction. In this experiment, phosphoric acid will be used as the catalyst. The excess acetic acid will be quenched with the addition of water. The aspirin product is not very soluble in water so the aspirin product will precipitate when water is added. The synthesis reaction of aspirin is shown below: Alulii ad Procedure 1) Mix salicylic acid and acetic anhydride in a 125 ml Erlenmeyer flask, add 5drops of H2SO4. 2) Heat on steam bath for 10 min, then cool. 3) Add 50 ml water and cool on ice. 4) collect product by vacuum filtration 5) Air dry the crude product crystals Data and observations Crude product + watch glass = 32.02 g Watch glass = 30.10 g During mixing, the addition of sulphuric acid caused some fizzing After addition of water and cooling, no crystals appeared, thus it was placed on ice for more than 10 min and crystals appeared
Transcribed Image Text:09:34 ( HPSG032 Introduction Aspirin is the common name for the compound acetylsalicylic acid, widely used as a fever reducer and as a pain killer. Salicylic acid, whose name comes from Salix, the willow family of plants, was derived from willow bark extracts. In folk medicine, willow bark teas were used as headache remedies and other tonics. Nowadays, salicylic acid is administered in the form of aspirin which is less irritating to the stomach than salicylic acid. To prepare aspirin, salicylic acid is reacted with an excess of acetic anhydride. small amount of a strong acid is used as a catalyst which speeds up the reaction. In this experiment, phosphoric acid will be used as the catalyst. The excess acetic acid will be quenched with the addition of water. The aspirin product is not very soluble in water so the aspirin product will precipitate when water is added. The synthesis reaction of aspirin is shown below: Alulii ad Procedure 1) Mix salicylic acid and acetic anhydride in a 125 ml Erlenmeyer flask, add 5drops of H2SO4. 2) Heat on steam bath for 10 min, then cool. 3) Add 50 ml water and cool on ice. 4) collect product by vacuum filtration 5) Air dry the crude product crystals Data and observations Crude product + watch glass = 32.02 g Watch glass = 30.10 g During mixing, the addition of sulphuric acid caused some fizzing After addition of water and cooling, no crystals appeared, thus it was placed on ice for more than 10 min and crystals appeared
09:35 1. Deduce a suitable title and aim for this experiment 2. Mention three errors that can be done during the experiment and how they can be circumvented 3. What is the significance of the acid during the experiment? 4. What experiment can be conducted to purify the obtained product? Outline a simple procedure on how you will carry out the experiment. Answer should be in point form, it should be concise and easy to follow Add a caption... > Status (Custom) +
Transcribed Image Text:09:35 1. Deduce a suitable title and aim for this experiment 2. Mention three errors that can be done during the experiment and how they can be circumvented 3. What is the significance of the acid during the experiment? 4. What experiment can be conducted to purify the obtained product? Outline a simple procedure on how you will carry out the experiment. Answer should be in point form, it should be concise and easy to follow Add a caption... > Status (Custom) +
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