Macroscale and Microscale Organic Experiments
7th Edition
ISBN: 9781305577190
Author: Kenneth L. Williamson, Katherine M. Masters
Publisher: Brooks Cole
expand_more
expand_more
format_list_bulleted
Question
Chapter 3, Problem 6Q
Interpretation Introduction
Interpretation:
The effect of the incomplete drying of the sample on the melting point should be determined.
Concept introduction:
Temperature at which an element changes from the solid state to the liquid state is known as melting point or sometimes liquefaction point. At the melting point, both solid and liquid phase coexist in equilibrium. It depends on the pressure and is normally defined at the standard pressure
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
How will the calculated molarity of the solution be affected if solid particles splatter out of the flask during the drying process? Explain.
How will the calculated molarity be affected if the solute residue is not dried thoroughly? Explain.
What is the problem with using a solvent with a very high boiling point for recrystallization?
How does the volume of a solvent affect the purity of the material in recrystallization?
Chapter 3 Solutions
Macroscale and Microscale Organic Experiments
Knowledge Booster
Similar questions
- Acetone and isopropyl alcohol are generally not suitable for use in extraction, but are frequently used as recrystallization solvents. Explainarrow_forwardWhen dissolving salt in water, what would be the effect on the dissolution rate if a 1, 0g chunk were dissolved instead of 1.0 g of crushed salt?arrow_forward5. Discuss how melting points of the impure sample and recrystallized sample could have been used to determine the success of your recrystallization and identity of your unknown.arrow_forward
- Why is it important to cool slowly during recrystallizationarrow_forward1. Cite one factor that affects percent yield during recrystalization. 2. Discuss the importance of solvent-solvent partition in separating mixtures.arrow_forwardList and describe two methods that can used to improve the separation of a liquid mixture by fractional distillationarrow_forward
- 6 Assuming that hexane and water obey the required solubility criteria, why could they still not be used as a solvent pair in a mixed solvent recrystallization? Explain.arrow_forwardWhen conducting a recrystallization what should generally be true when comparing the compounds melting point compared to the boiling point of the solvent? Explain why this is so.arrow_forwardDuring heating, some solution of NaCl splattered out of the evaporating dish. How would this affect the calculated percentage of mixture recovered upon separation?arrow_forward
- Why is flameless heating used for heating a solution in hexane or diethyl ether during a recrystallization? Why should the size of crystals obtained in a recrystallization be neither too large nor too small?arrow_forwardA student is trying to perform a single solvent recrystallization of compound X using methanol. He observed that compound X is insoluble in methanol at room temperature and also insoluble at boiling temperature. Is methanol a good recrystallization solvent? A. Yes, you want to only dissolve the impurities and the sample should remain undissolved. B. No, you need a solvent which fully dissolves the sample only at room temperature so that it can crystallize in the ice bath. C. No, you need a solvent which dissolves the sample only at boiling temperature for selective crystallization upon cooling. D. Yes, you don't want the solvent to fully dissolve the sample at both temperatures so that it will crystallize in the cooling step. A student obtained a supersaturated solution in the recrystallization experiment. Which of the following methods should he/she perform to induce crystal growth? (Can select more than 1) A. Add a crystal of pure acetylsalicylic acid B. Place the solution in an ice…arrow_forwardOne of the problems that can be encountered in recrystallization is the failure of the solute to crystallize. In which of the following scenarios could that happen? a. Cooling the filtrate in an ice bath. b. Using a wide bore, long-stemmed funnel in the hot filtration step. c. Addition of too much water in the receiving flask. d. Washing the residue with cold solventarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Macroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks ColeChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub CoEBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT
Macroscale and Microscale Organic Experiments
Chemistry
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Brooks Cole
Chemistry: Matter and Change
Chemistry
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Glencoe/McGraw-Hill School Pub Co
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT