Answered: Among the three solvents used in the…

Among the three solvents used in the separation of pigments in spinach, which produced the most effective separation? Explain your choice. a. hexane b. 70:30 hexane:acetone c. 50:50 hexane:acetone

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter4: Recrystallization

Section: Chapter Questions

Problem 1Q

See similar textbooks

Related questions

Q: What is deionized water? What kind of impurities are not removed by deionization?

A: Purified water does not contain any impurity. There are various methods for purification of water…

Q: d) In a typical HPLC column, 150 atm of pressure is required to push the mobile phase through the…

A: In this question, we have to find out the correct answer of given problem by the help of the concept…

Q: A 50.0 ml juice extract is colorimetrically assayed using Nelson's test. One milliliter (1.00 mL) of…

Q: 2 Suppose a particular extraction proceeds with a distribution coefficient of 7.5. The mixture…

A: Given that, Distribution coefficient KD = 7.5 Certain amount of caffeine dissolved in 100 ml of…

Q: 2. Among the three solvents used in the separation of pigments in spinach, which produced the most…

A: Separation of pigments in spinach, by chromatographic method.

Q: 3 Briefly describe the process of liquid-liquid extraction. 4 Differentiate between extraction and…

A: The process of Liquid–liquid extraction which is also known as the solvent extraction and…

Q: What is each cycle of a simple distillation called? Theoretical plate Distillate…

A: Simple distillation is process of separation.

Q: 5. Let's say naphthoic acid was isolated by vacuum filtration from our procedure explained in the…

A: Both methods are useful for removing moisture. Vaccum drying is most effective and gentle drying…

Q: In a distillation of a mixture of acetone (bp. 56°C and dichloromethane bp. 40°C), a fraction…

A: Percentage of acetone in the fraction depends on distance of average temperature from the boiling…

Q: One of the following techniques cannot be used for separation ounodwom Select one: O a.…

A: Answer - The correct option is (b) boiling point determination. The boiling point of a compound,…

Q: 0.100 g sample of phthalic acid was dissolved in 100 mL of water. When 25 ml of diethyl ether was…

A: Introduction- Solvent extraction is a process where 2 immiscible solvents are separated along with…

Q: Which of the ff is not true about recrystallization? a. acetanalide recrystallized only at cold…

A: Recrystallization is done to purify the compounds so as to get the purest form.

Q: A 25 g of butyric acid was extracted with 400 mL ether from 400 mL water (Kd=3.0 at 25 °C) Using…

A: Let, Vml of ether solution containing W gm of butyric acid solute be repeatedly extracted with v ml…

Q: spotting paper chromatography samples above the solvent level ______________________________________…

Q: Pay attention to the lipbalm formula of aloe vera extract (Aloe vera.L): Glycerin 5% Cera flava 10%…

A: lipbalm formula of aloe vera extract (Aloe vera.L): Glycerin 5% Cera flava 10% Nipagin 0.18% Lanolin…

Q: A student was given an unknown compound dissolved in acetone. The student decided to identify the…

A: Thin-layer chromatography is the technique that is used to separate or purify the compound from a…

Q: 50 g of salt was dissolved in 250 g of water. Find the mass fraction of salt in the extracted…

A: Mass fraction: It defined as WB = mb/m

Q: Of Aspirin, ethanol, acetaminophen, ethyl acetate, hexane, and water which could go undetected…

A: HPLC or high perfomance liquid chromatography is a usefull technique to separate and analyse…

Q: Three sample, X (neutral), Y (basic), and Z (acidic), were mixed and dissolved together in…

A: Dissolve the mixture in dichloromethane and separate the organic and aqueous layer using liquid…

Q: The distribution coefficient, k for a compound “A” between hexane and water is 7.5. What weight of A…

Q: Why is the washing of crystals on the filter paper not as effective a process of purification as…

A: Since there are multiple questions, we will answer only the first one. If you require the answers to…

Q: A 50.0 mL juice extract is colorimetrically assayed using Nelson’s test. One milliliter (1.00 mL)…

A: Given: 50 mL of original juice is used. 1 mL of the original solution is used to give absorbance of…

Q: In a liquid - liquid extraction, what is preferable? Three extractions with a small volume or one…

A: Liquid-liquid extraction is also known as solvent extraction or solvent partitioning. In this…

Q: If we are extracting 7 mg of caffeine using 8 ml dichloromethane . Does it make a difference using…

A: The question is based on the concept of solvent extraction. it is an experimental technique of…

Q: Eren, Rochelle, and Sarah were assigned to do a recrystallization experiment using three different…

Q: Given 60.00 g of the compound in 60.00 mL water. Calculate amount extracted using multiple (2 x…

A: Concept- In a multiple extraction procedure, a quantity of solvent is used to extract one layer…

Q: 2.3 In an experiment the essential oils from herbs, were extracted with water. Explain how you will…

A: Answer - Liquid-liquid extraction - Liquid–liquid extraction, also known as solvent extraction and…

Q: In an experiment the essential oils from herbs, were extracted with water. Explain how you will…

Q: Let's assume that 5.6 g of crude product was isolated, and 4.19 g of pure product was collected…

A: Melting point of crystal depends on arrangement of lattice

Q: Jamar spotted the three (3) component mixture shown below to a TLC plate and developed it using the…

Q: Why is sodium chloride added before extraction the aqueous layer with DCM? How does magnesium…

A: DCM refers to dichloromethane and the molecular formula CH2Cl2 is used as a solvent that is…

Q: 24. In paper chromatography, a rectangular piece of filter paper serves as the 24. A. mobile phase…

A: Paper chromatography was discovered by Synge and Martin in the year 1943. In paper chromatography,…

Q: Draw a FIVE STEP Schematic diagram of the procedure on how to separate pure crystals of CuSO4 , Alum…

A: given- CuSO4 , Alum and Benzoic acid

Q: Nitroethylene, H,C-CHNO, is a sensitive compound that must be prepared with great care. Atempted…

Q: What is the purpose of including a melting point in a procedure? A) As a method of purification - We…

A: Answer (A) Option is correct.

Q: Solute, A, has a distribution ratio between water and ether of 7.5 A 50 ml aqueous solution of 1M of…

A: Given: Distribution ratio= 7.5 Volume of aqueous solution= 50 mL Volume of organic solution (ether)=…

Q: The

A: Given: Data tabulation on Limonene (ug/ml) & Response of Detector is given Response…

Q: Purification of benzoic acid 1. What is the purpose of washing the crystal in the filter paper with…

A: 1) Answer: Benzoic acid is prepared from toluene industrially. Toluene is react with cl2 gas under…

Q: After a complicated chemical synthesis, the last step is to separate two liquids, ACETONE AND…

A: Depending on the various physical and chemical characteristics of compounds we can separate the two…

Q: Running the reaction: 2.50 g of benzoin and 0.39 g of tetrabutylammonium hydrogen sulfate were…

Q: Explain why it is needed to filter the solvent before introducing it to the HPLC system

A: Basically there are following two reasons for using filtration during HPLC sample preparation are…

Q: 4. In a distillation of a mixture of acetone (bp. 56°C and dichloromethane bp. 40°C), a fraction…

A: The boiling point of acetone and dichloromethane is 56 oC and 40 oC respectively. The change in…

Q: You have an aqueous extract that has been dried and you are going to perform a liquid/liquid…

A: The answer is as follows:

Q: 4. Enumerate the differences between a serological and a volumetric pipette. 5. Enumerate the uses,…

A: Pipettes are one of the most important instruments in the analytical measurements that help us in…

Q: Prelab question

A: The solubility of sulfanilamide in 95% ethyl alcohol at 780C can be known from the figure 11.2 as…

Q: A particular extraction proceeds with a distribution coefficient of 6. The system consists of 3.5 g…

Q: Based on the resulting chromatograms after visualization with iodine vapor, which between the…

A: A question based on purification, which is to be accomplished.

Question

Among the three solvents used in the separation of pigments in spinach, which produced the most effective separation? Explain your choice.

a. hexane
b. 70:30 hexane:acetone
c. 50:50 hexane:acetone

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

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

1.What is the significance when KD is either a small or large value? 2. Methyl alcohol and ethyl alcohol are poor extraction solvents. Why?3. What is the major disadvantage of using ether as an extracting solvent?
Briefly describe on how peptization may occur during washing process of pure compound
What are emulsions? Why do they form during extractions? How is the formation of an emulsion minimized?
What type of chromatogtaphy (RPLC, NPLC, HILIC, SEC, IEX) could be used for analyzing monosodium glutamate in Beef Broth Cubes, including those of other ions like NaCl? Explain
In an experiment the essential oils from herbs, were extracted with water. Explain how you will separate the oils from the water using liquid-liquid extraction. Discuss the procedure, equipment and extraction solvent choice
Explain briefly a proper technique to use burette.
31 and 32. pls help and show solution plsss
At what step in the recrystallization process would a colored impurity be removed?
How would you make 150ml of Coomassie Staining Solution
What is the purpose of performing a blank titration in the assay of ibuprofen? A. To determine the amount of titrant that would react with the indictor. B. To determine the amount of titrant that would react with ibuprofen. C. To determine the amount of titrant that would react with potassium hydrogen phthalate. D. To determine the amount of titrant that would react with free acid in the solvent.
Purification of benzoic acid 1. What is the purpose of washing the crystal in the filter paper with water? 2. How recrystallization affects the theoretical yield of sample? Explain.
For standard turbidity measurements, the increase in signalis due toa.) higher amounts of analytes that complex with formazin.b.) higher amounts of analytes that precipitate with formazin.c.) higher amounts of analytes that react with formazin.