EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
6th Edition
ISBN: 9781305687875
Author: Gilbert
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Question
Chapter 3.2, Problem 6E
a)
Interpretation Introduction
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 Introduction
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 Introduction
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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Students have asked these similar questions
What physical property determines which solvent sinks to the bottom when performing a liquid-liquid extraction?
A. Refractive Index
B. Solubility
C. Density
D. Boiling Point
Which of these is NOT true of a good recrystallization solvent?
Which of these is NOT true of a good recrystallization solvent?
a) The compound is insoluble in the solvent when it is cold.
b) The solvent boiling temperature is at least 40 °C.
c) The solvent has many impurities.
d) The compound is soluble in the solvent when it is hot.
How are solvents chosen for recrystallization? (single solvent or mixed-solvent system).What are the properties of a good solvent system? How are crystals collected?
Chapter 3 Solutions
EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
Ch. 3.2 - Prob. 1ECh. 3.2 - Prob. 2ECh. 3.2 - Prob. 3ECh. 3.2 - Prob. 4ECh. 3.2 - Prob. 5ECh. 3.2 - Prob. 6ECh. 3.2 - Prob. 7ECh. 3.2 - Prob. 8ECh. 3.2 - Prob. 9ECh. 3.2 - Prob. 10E
Ch. 3.2 - Prob. 11ECh. 3.2 - Prob. 12ECh. 3.2 - Prob. 13ECh. 3.2 - Prob. 14ECh. 3.2 - Prob. 15ECh. 3.2 - Prob. 16ECh. 3.2 - Prob. 17ECh. 3.2 - Prob. 18ECh. 3.2 - Prob. 19ECh. 3.2 - Prob. 20ECh. 3.2 - Prob. 21ECh. 3.2 - Prob. 22ECh. 3.2 - Prob. 23ECh. 3.2 - Prob. 24ECh. 3.2 - Prob. 25ECh. 3.2 - Prob. 26ECh. 3.2 - Prob. 27ECh. 3.2 - Prob. 28ECh. 3.2 - Prob. 29ECh. 3.2 - Prob. 30ECh. 3.2 - Prob. 31ECh. 3.2 - Prob. 32ECh. 3.2 - Prob. 34ECh. 3.3 - Prob. 1ECh. 3.3 - Prob. 2ECh. 3.3 - Prob. 3ECh. 3.3 - Prob. 4ECh. 3.3 - Prob. 5ECh. 3.3 - Prob. 6ECh. 3.3 - Prob. 7ECh. 3.3 - Prob. 8ECh. 3.3 - Prob. 10ECh. 3.3 - Prob. 11ECh. 3.3 - Prob. 12ECh. 3.3 - Prob. 13ECh. 3.3 - Prob. 14ECh. 3.3 - Prob. 15ECh. 3.3 - Prob. 16ECh. 3.3 - Prob. 17ECh. 3.3 - Prob. 18ECh. 3.3 - Prob. 19ECh. 3.3 - Prob. 21ECh. 3.3 - Prob. 22ECh. 3.3 - Prob. 23ECh. 3.3 - Prob. 24ECh. 3.3 - Prob. 25ECh. 3.3 - Prob. 26E
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Similar questions
- 25. In the paper chromatography experiment on food dyes, salt water was used as the A. mobile phase B. stationary phase C. eluent D. solute E. sample spotsarrow_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_forwardWhich is not required in recrystallization? a. solution is filtered at high temperature b. moderate volatility solvent c. saturated solution d. solvent must dissolve the impuritiesarrow_forward
- This is the most common industrial process for preparing large-scale production of nanoparticles wherein a liquid or gas is fed into a furnace and the nanoparticles are recovered by air classification. a. sol-gel method b. sputtering c. pyrolysis d. laser ablationarrow_forward3. What is particulate gravimetry? When do we use this technique? 4. What are the conditions for a successful gravimetric analysis. 5. Define nucleation. What conditions are important for this stage.arrow_forwardQ2. What does “crude” product mean? Q3. What is the advantage of using Buchner filtration in filtering crystals? Q4. Briefly explain how scratching the wall of the glass flask can help formation of crystals. Q5. Briefly explain why crystals form as the solvent cools during recrystallization.arrow_forward
- What are the criteria for a good recrystallization solvent?arrow_forwardIndicate which of the two filtration techniques, gravity or vacuum, is the suitable for each of the following operations. a. Hot filtration B. Removal of decolorising carbon C. Isolation of recrystallized solute from solution 2. What is the process of seedling as it applies to recrystallisation? What purpose does it serve?arrow_forwarda. What are the qualities of a perfect solvent for recrystallization? b. How much solvent must be used in the recrystallization and why?arrow_forward
- Briefly explain why crystals form as the solvent cools during recrystallization.arrow_forwardFilter paper Saturated KNO; solution 259 Figure 1. Experimental apparatus. Experimental Procedure Part 1. Copper and Zinc Metal 1) Select a piece of copper and a piece of zinc metal wire from the containers in the hood. 2) Clean the surface of the metal wires with the steel wool. Wipe clean with a dry paper towel. 3) Obtain a plastic well plate. Fill one well with 10 drops of the Copper ion solution from the dropper bottle. Label this well with a Sharpie marker so that you remember which solution you filled it with, 4) Repeat step 3 with Zinc ion solution. Select a well right next to the well in step 3 so that the two wells with Copper and Zinc ion solution are right next to each other. 5) Obtain a small dry strip of filter paper. You may have to cut a large piece of filter paper down to the appropriate size. It should be exactly this big C It's OK to tear the filter paper with your hands. Using the drop bottle, saturate the filter paper strip with KNO; solution. Gently place one end…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
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