Homework Help is Here – Start Your Trial Now!
Science
Chemistry
Fill in the blanks: Complete the procedure for the synthesis of aspirin by providing the answer to the blanks. In a 125-mL erlenmeyer flask, add 2 g 1. salicylic acid (put the flask on the balance, and zero it). In the hood, carefully add 5 mL of 2. acetic anhydride (severe irritant, handle carefully) to the flask. Slowly add about 10 drops of 85% 3. phosphoric acid Stir the mixture with a stirring rod. Place the flask and its contents in a boiling water bath and stir until all the solid dissolves. Remove the flask from the hot water and let it cool. Working in the hood, add 20 drops of 4. water to the cooled mixture. (Avoid breathing any of the vapors, which contain 5. and are irritating). When the reaction is complete, add 50 mL of cold water to the reaction mixture. Cool the mixture by placing the flask in an ice bath for 10 minutes. Stir occasionally to keep mixture in the reactive state. Crystals of 6. should form. If no crystals form, aspirin gently scratch the sides of the flask with the stirring rod. Collect the aspirin crystals using 7. Buchner funnel Set up a 8. as described by your instructor, or in a manner performed previously. Add a pre-weighed 9. filter into the funnel and wet it so that it seals completely when vacuum is applied. Pour the aspirin crystals into the funnel and collect the white solid. Add a little cold water to the flask and make certain all the crystals are transferred to the funnel. After you have washed the crystals, keep the vacuum on for about 5 min to help dry the crystals. Turn off the vacuum, and transfer the filter paper and crystals to a pre-weighed beaker. Determine the % recovery. Obtain a few aspirin crystals determine its melting point range. Determine the purity of aspirin using the 10. test. acetic acid

Fill in the blanks: Complete the procedure for the synthesis of aspirin by providing the answer to the blanks. In a 125-mL erlenmeyer flask, add 2 g 1. salicylic acid (put the flask on the balance, and zero it). In the hood, carefully add 5 mL of 2. acetic anhydride (severe irritant, handle carefully) to the flask. Slowly add about 10 drops of 85% 3. phosphoric acid Stir the mixture with a stirring rod. Place the flask and its contents in a boiling water bath and stir until all the solid dissolves. Remove the flask from the hot water and let it cool. Working in the hood, add 20 drops of 4. water to the cooled mixture. (Avoid breathing any of the vapors, which contain 5. and are irritating). When the reaction is complete, add 50 mL of cold water to the reaction mixture. Cool the mixture by placing the flask in an ice bath for 10 minutes. Stir occasionally to keep mixture in the reactive state. Crystals of 6. should form. If no crystals form, aspirin gently scratch the sides of the flask with the stirring rod. Collect the aspirin crystals using 7. Buchner funnel Set up a 8. as described by your instructor, or in a manner performed previously. Add a pre-weighed 9. filter into the funnel and wet it so that it seals completely when vacuum is applied. Pour the aspirin crystals into the funnel and collect the white solid. Add a little cold water to the flask and make certain all the crystals are transferred to the funnel. After you have washed the crystals, keep the vacuum on for about 5 min to help dry the crystals. Turn off the vacuum, and transfer the filter paper and crystals to a pre-weighed beaker. Determine the % recovery. Obtain a few aspirin crystals determine its melting point range. Determine the purity of aspirin using the 10. test. acetic acid

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
See similar textbooks
icon
Related questions
Question

For question 6, answer 9 and 10 only.

Question 6 of 28 Fill in the blanks: Complete the procedure for the synthesis of aspirin by providing the answer to the blanks. (put the flask on the In a 125-mL erlenmeyer flask, add 2 g 1. salicylic acid balance, and zero it). In the hood, carefully add 5 mL of 2. acetic anhydride (severe irritant, handle carefully) to the flask. Slowly add about 10 drops of 85% 3. phosphoric acid Stir the mixture with a stirring rod. Place the flask and its contents in a boiling water bath and stir until all the solid dissolves. Remove the flask from the hot water and let it cool. Working in the hood, add 20 drops of 4. water to the acetic acid cooled mixture. (Avoid breathing any of the vapors, which contain 5. and are irritating). When the reaction is complete, add 50 mL of cold water to the reaction mixture. Cool the mixture by placing the flask in an ice bath for 10 minutes. Stir occasionally to keep mixture in the reactive state. Crystals of 6. aspirin should form. If no crystals form, gently scratch the sides of the flask with the stirring rod. Collect the aspirin crystals using 7. Buchner funnel Set up a 8. as described by your instructor, or in a manner performed previously. Add a pre-weighed 9. filter into the funnel and wet it so that it seals completely when vacuum is applied. Pour the aspirin crystals into the funnel and collect the white solid. Add a little cold water to the flask and make certain all the crystals are transferred to the funnel. After you have washed the crystals, keep the vacuum on for about 5 min to help dry the crystals. Turn off the vacuum, and transfer the filter paper and crystals to a pre-weighed beaker. Determine the % recovery. Obtain a few aspirin crystals determine its melting point range. Determine the purity of aspirin using the 10. test.
Transcribed Image Text:Question 6 of 28 Fill in the blanks: Complete the procedure for the synthesis of aspirin by providing the answer to the blanks. (put the flask on the In a 125-mL erlenmeyer flask, add 2 g 1. salicylic acid balance, and zero it). In the hood, carefully add 5 mL of 2. acetic anhydride (severe irritant, handle carefully) to the flask. Slowly add about 10 drops of 85% 3. phosphoric acid Stir the mixture with a stirring rod. Place the flask and its contents in a boiling water bath and stir until all the solid dissolves. Remove the flask from the hot water and let it cool. Working in the hood, add 20 drops of 4. water to the acetic acid cooled mixture. (Avoid breathing any of the vapors, which contain 5. and are irritating). When the reaction is complete, add 50 mL of cold water to the reaction mixture. Cool the mixture by placing the flask in an ice bath for 10 minutes. Stir occasionally to keep mixture in the reactive state. Crystals of 6. aspirin should form. If no crystals form, gently scratch the sides of the flask with the stirring rod. Collect the aspirin crystals using 7. Buchner funnel Set up a 8. as described by your instructor, or in a manner performed previously. Add a pre-weighed 9. filter into the funnel and wet it so that it seals completely when vacuum is applied. Pour the aspirin crystals into the funnel and collect the white solid. Add a little cold water to the flask and make certain all the crystals are transferred to the funnel. After you have washed the crystals, keep the vacuum on for about 5 min to help dry the crystals. Turn off the vacuum, and transfer the filter paper and crystals to a pre-weighed beaker. Determine the % recovery. Obtain a few aspirin crystals determine its melting point range. Determine the purity of aspirin using the 10. test.
Question 7 of 28 Fill in the blanks: Write the letter of the pair of compounds that illustrates the given isomerism. H3C H₂C. A CI E CH3 H₂N CH3 1 Br H₂C. CH₂ Skeletal Isomerism: H₂C H₂C F B CH3 CH3 CH3 H₂C HO Br AND C H₂C " CH3 K CI CH₂ CI H₂C. H₂C. CHa D OH NH₂ H L OH CH3 CH3
Transcribed Image Text:Question 7 of 28 Fill in the blanks: Write the letter of the pair of compounds that illustrates the given isomerism. H3C H₂C. A CI E CH3 H₂N CH3 1 Br H₂C. CH₂ Skeletal Isomerism: H₂C H₂C F B CH3 CH3 CH3 H₂C HO Br AND C H₂C " CH3 K CI CH₂ CI H₂C. H₂C. CHa D OH NH₂ H L OH CH3 CH3
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Concentration Terms
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS