a)
Interpretation:Use of filter flask during recrystallization at miniscale level should be determined.
Concept introduction:Recrystallization is technique that is used for purification of organic compounds. This process includes dissolution of solid in specific solvent at high temperature and then crystals are made again by process of cooling. Temperature of crystals is decreased to allow impurities to remain in solution only.
b)
Interpretation: Use of filter trap during recrystallization at miniscale level should be determined.
Concept introduction: Recrystallization is technique that is used for purification of organic compounds. This process includes dissolution of solid in specific solvent at high temperature and then crystals are made again by process of cooling. Temperature of crystals is decreased to allow impurities to remain in solution only.
c)
Interpretation: Use of Buchner funnel during recrystallization at miniscale level should be determined.
Concept introduction: Recrystallization is technique that is used for purification of organic compounds. This process includes dissolution of solid in specific solvent at high temperature and then crystals are made again by process of cooling. Temperature of crystals is decreased to allow impurities to remain in solution only.
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Chapter 3 Solutions
EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
- if you isolate more than one crop of crystal what must you do before combining them. (related to recrystallization)arrow_forwardWhat should you do if there are insoluble impurities after heating up your sample in the recrystallization solvent? a. Add more solvent to dissolves the impurities. b. Gravity filter the hot solution. c. Pick out the insoluble particles with a spatula. d. none of the above.arrow_forwardWrite the dispersion medium and dispersed phase in milk.arrow_forward
- is water a good solvent for recrystallization for acetanilide based on the image?arrow_forwardWhat properties should ideally be possessed by a recrystallization solvent?arrow_forwardThe method of extraction for Roman chamomile is: Choose one answer. a. cold-press extraction b. steam distillation c. water distillation d. solvent extractionarrow_forward
- Occasionally you will have solid impurities “trash” in your heated recrystallization solvent. How do you remove these impurities?arrow_forwardWhy should the burette not be completely emptied when dispensing?arrow_forwardWhen isolating the solid after recrystallization using vacuum filtration what solvent should you use to aid in the rinse from the Erlenmeyer flask to the vacuum filter funnel? (Only pick one answer) Group of answer choices: Cold ethyl acetate Cold ethanol Hot ethyl acetate Hot ethanol Hot water Cold water None of the above, it should not be risnedarrow_forward
- is 2% NaCl is more polar than the whatman filter paper?arrow_forwardChemistry Nitric acid solutions with a pH of about 5 are often used to simulate acid rain. A nitric acid solution with a pH of 5 has a concentration of 0.00001 M. Describe how to prepare 10 mL of a 0.00001 M solution using a 1 M stock solution and the serial dilution techniquearrow_forwardHow will you increase the measured yield of recrystallized benzoic acid? The receiving flask from hot filtration should not contain a little amount of solvent. Activated charcoal was not introduced to the solution. During cold filtration, a fluted filter paper was used. After hot filtration the solution was filtered immediately.arrow_forward
Macroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole
EBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT