Experimental Organic Chemistry: A Miniscale & Microscale Approach (Cengage Learning Laboratory Series for Organic Chemistry)
6th Edition
ISBN: 9781305080461
Author: John C. Gilbert, Stephen F. Martin
Publisher: Brooks Cole
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 3.2, Problem 34E
a)
Interpretation Introduction
Interpretation:Purpose of decolorizing carbon to poison victims should be determined.
Concept introduction:Decolorizing carbon is activated charcoal used for removal of colored impurities in process of recrystallization. It is commercially found as Darco or Norite and exists in finely divided powdered state with large surface area.
b)
Interpretation Introduction
Interpretation:Removal of charcoal from victim should be explained.
Concept introduction: Decolorizing carbon is activated charcoal used for removal of colored impurities in process of recrystallization. It is commercially found as Darco or Norite and exists in finely divided powdered state with large surface area.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
which of the following statements regarding purification by recrystallization is false?
i. activated charcoal removes insoluble impurities.
ii. water is the best recrystallization solvent for organic compounds.
iii. slow cooling permits the exclusion of the solvent from the recrystallized solid.
a. i, ii, and iii
b. i and ii
c. i only
d. ii and iii
Why is methanol chosen as the solvent for recrystallization?
A. Because it can easily be boiled off.
B. Because the product and the impurities dissolve well at the boiling point of the solvent.
C.Because the reactants dissolves less than the product in methanol at low temperatures.
D.Because it has a low boiling point
8.
Organic solids are best purified by
a. recrystallization
b. vacuum distillation
c. fractional distillation
d. simple distillation
Chapter 3 Solutions
Experimental Organic Chemistry: A Miniscale & Microscale Approach (Cengage Learning Laboratory Series for Organic Chemistry)
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
Knowledge Booster
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.Similar questions
- What is brewing tea in water an example of? A. solid-liquid extraction B. liquid-liquid extraction C. none of the above D. recrystallization E. all of the abovearrow_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_forwardresearchers working in a chemistry lab were examined anatomical structures of the brain using concentrated formaldehyde solutions. Once their studies concluded there remained 1.5 gallons of the substance and the researcher decided to pour this down the drain. In this case, they directly violet regulations put in place by which office?1. Office of research integrity 2. Institutional animal care and use committee3. Occupational safety and health administration 4. Institutional review boardarrow_forward
- You've just synthesized a new molecule and need to purify it by recrystallization. You find that it is poorly soluble in water and highly soluble in ethanol, even when cooled in ice. What solvent should work in this situation? a. water b. Recrystallization from any solvent is impossible. c. methanol d. a solvent mixture - water and ethanolarrow_forward76. Subject :- Chemistryarrow_forwardNina, Roland, and Odi tried to do a recrystallization technique to purify a crude sample of benzoic acid. However, their instructor, George, pointed out some things about their technique. Roland forgot to add charcoal to the crude sample. Nina put the hot sample in the ice bath immediately. Odi used a long-stemmed funnel. Who among the students will achieve the highest purity? a. None of the above b. Nina c. Odi d. Roland Explain why. Thank you!arrow_forward
- 10. Describe how you can decide whether your recrystallized trphenylmethanol is pure or not ?arrow_forward4. One of the steps in the preparation of Calamine lotion is by grinding or rubbing the active substance in amortar with the aid of a pestle. How do we call this process? A. TriturationB. ComminutionC. LevigationD. Geometric Dilutionarrow_forwardExplain and elaborate how the following purification techniques work: a. Sublimation b. Recrystallizationarrow_forward
- Briefly explain the purpose of each item in the distillation set-up a. Boiling chips – b. DCM – c. Petroleum jelly –arrow_forwardWhich is TRUE about the solubility of naphthalene in water and carbon disulfide (Ccs,)? Naphthalene H H Н. H. Select one: O a. Naphthalene is insoluble in both water and carbon disulfide O b. Naphthalene is more soluble in carbon disulfide than in water. O c. Naphthalene is more soluble in water than in carbon disulfide. O d. Naphthalene is equally soluble in both water and carbon disulfide O-I CHarrow_forwardAssume that your compound recrystallizes equally well from benzyl alcohol and isopropyl alcohol. Which solvent is the better choice for recrystallization? a. Benzyl alcohol because it is miscible with water. b. Isopropyl alcohol is better because it has a much lower boiling point and is easier evaporate off c. A mixed solvent - benzyl alcohol and isopropyl alcohol d. It doesn't matter which one if they work equally in the recrystallization process.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
