Q: Column Chromatography works by the same principle as TLC however the silica gel is not plated on a…
A: Note : Compound A is more soluble in mobile phase. Therefore less polar and having higher Rf.…
Q: need this answer in detail. don't copy elsewhere I will downvote . A separation of the mixture of…
A:
Q: All three of these are gas chromatography runs from my sample. I'm trying to figure out what it…
A: To find the reason for varied retention times and intensities
Q: Student A did not see any spots on her TLC plate after visualization under iodine vapor. Which of…
A: The solution is given below -
Q: 7. Would it work to take the melting point by using the same capillary tube for both trials? Solid…
A: This is because melting of a pure solid occurs at a constant temperature called melting point while…
Q: Chromatography
A:
Q: Why line extraction from a point cloud is needed ?
A: Planar structure extraction from point clouds is an important process in many applications.
Q: Why is it important to heat the empty evaporating dish at the beginning of the lab procedure of…
A: The percentage of water in Copper (II) sulfate measured by dry crucible than only we get more…
Q: Why is it necessary to run TLC in a closed container and to have the interior vapor saturated with…
A: In the separation of compounds by TLC, a solvent moves the compound up the plate based on its…
Q: Why is catalytic dewaxing not considered as a separation process?
A: Since Catalytic dewaxing involves breaking and making bonds, so it is usually referred to as a…
Q: Remember how you learned that a pure liquid distills within a narrow boiling point range, but that a…
A:
Q: igh-performance liquid chromatography would never be applied in drug analysis This statement is…
A: Given : We have to tell whether the statement is true or false.
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: What are the possible reasons why there are no spots on the Developed Plate after analysis?
A:
Q: 1.) Would recrystallization work if you more impurity than product and both were soluble in the…
A:
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: A student doing this experiment had some problems with the procedure, as described below. Explain…
A: On reaction of magnesium and hydrochloric acid, magnesium chloride and hydrogen gas is produced. The…
Q: why is it necessary to turn the separatory funnel upside down
A: It is a glassware used to separate two layer namely aqueous layer and organic layer. It contains…
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: So we lately had a paper chromatography activity and we used a plant with only one pigment (which is…
A: In paper chromatography Blot dry paper is used. It is useful for separation of colour Components.
Q: What is the other term for mobile phase in chromatography? (Eluant, Eluate, or Solvent)
A:
Q: Gestation time arrangement of Hegran, Hexanol, and Benzene compounds in the reverse phase of column…
A: A question based on analytical process that is to be accomplished.
Q: State the major differences along liquid, gas, and super critical fluid chromatography?
A: A supercritical fluid is the phase of a material at critical temperature and critical pressure of…
Q: The following conditions may not cause tailing EXCEPT a. Volatile solvent b.Uncovered chamber…
A: TLC is one of the basic technique to get a preliminary idea about the compound synthesized in the…
Q: B. There was big news all over the internet that the Ponkan oranges that were imported from one of…
A: Gas chromatography: Gas chromatography is an analytical technique used to seperate the…
Q: What would happen if the Erlenmeyer flask containing the crude dba in EtOH undergoing…
A: As we know during recrystallisation we dissolve our product into suitable solvent such as here, dba…
Q: Diprivan® (propofol) is a commonly used sedative-hypnotic agent used for sedation and anesthesia…
A: Here we have to choose the correct nature of diprivan-
Q: 1. State the reason why we need to compare the observed retention time values to the standard values…
A: As per the rules, only the first question can be answered. Retention time is the time spent by the…
Q: In an experiment the essential oils from herbs, were extracted with water. Explain how you will…
A:
Q: In one paper chromatography, the Rf for spots X and Y are 0.5 and 0.35 respectively. The solvent…
A: In paper chromatography Rf value is the ratio of distance travelled by compound to distance…
Q: Is the mobile phase for your TLC and column chromatography more or less polar than the stationary…
A: Mobile phase: It is the phase that is getting movement in the column. The sample that has to be…
Q: What property determines which layer is on top or bottom in an extraction?
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: Explain why the indicators, red and blue, are separated on the TLC plate during a chromatography…
A: Thin ayer chromatography is a chromatography technique, which is used to separate non-volatile…
Q: What error would occur if the Sep-Pak C18 cartridge (the nonpolar stationary phase) was not…
A: C-18 cartridges are columns that are filled with packing material that act as stationary phase. The…
Q: What is the polarity of the compounds closest to the point of application on the filter paper when…
A: Chromatography is used to separate mixtures of substances into their components. All forms of…
Q: 4. When performing a melting point on a solid compound using a melting point apparatus, two melting…
A: Note - Since you have asked multiple questions, we will solve the first question for you. If you…
Q: if you wanted to makes the spots travel up the TLC plate further, what solvent ration would you…
A: You know that ethyl acetate is a polar solvent while hexane is a non-polar solvent.
Q: With the methods and GC columns used in organic labs, the volatility of the nitrotoluene products is…
A: The question is based on the concept of gas chromatography. we having given three compounds. we have…
Q: 5. Column Chromatography works by the same principle as TLC however the silica gel is not plated on…
A: To answer question 5.
Q: 1. Using a burette, measure the cyclohexene (6.0 mmol) and transfer to a 125 mL erlenmeyer, along…
A: According to the given procedure, required millimoles of HCl = 14.9 mmol Molarity of HCl, C = 12.5 M…
Q: True or False? In column chromatography the solvent moves up and through the adsorbent by capillary…
A: Answer :- 8) False 9) y-adaptor and condenser…
Q: In the second paragraph you should define and describe the process of gas chromatography. In this…
A: A diluted sample in used in gas chromatography because this helps in establishing a proper…
Q: Determine the order of inhibition time of hexane, hexanol and benzene compounds in the reverse phase…
A: Given compounds: Hexane, hexanol and Benzene. To determine: The order of Inhibition time in Reverse…
Q: You were analyzing a mixture of volatile solvents using Gas Chromatography and found out that two…
A: Chromatography is the method for the separation of a mixture with very high resolution, which is an…
Q: The following conditions may not cause tailing EXCEPT a. Thick filter paper as the stationary phase…
A: Tailing in thin layer chromatography : Due to the using high concentration of solute or other…
Q: Extraction of the aqueous salicylic acid solutions with 10% ethyl acetate/hexane (density ~ 0.7…
A: As you have posted two independent questions in a single request, we will solve the first question…
Q: One of the main differences between TLC and column chromatography is the direction in which the…
A: Purification is one of the key step in the isolation of organic or inorganic compounds. Different…
Q: c) In one paper chromatography, the Rf for spots X and Y are 0.5 and 0.35 respectively. The solvent…
A: Paper chromatography is the chromatography based on liquid-liquid partition chromatography. It…
In the video (liquid-liquid extraction), why is it necessary to turn the separatory funnel upside down and to open the stopcock?
Step by step
Solved in 3 steps
- Which of the three methods, (Use of Separatory Funnel, Decantation or Use of Pasteur Pipette) do you believe is most suitable for transferring large volumes of liquid mixtures and why?A student was trying to prepare acetaminophen in the laboratory. She found a melting point range of 169-173. The melting of acetaminophen is reported to be 168-172c. How could the student have verified that the produce is acetaminophen? Group of answer choices. Retake the sample melting point with more material in the sample. Ask the lab partner to measure the melting point of the sample. Take a mixed melting point with an authentic sample of acetaminophenWhich is the most appropriate way to dispense liquid using a dropper (vertical, 45° angle, or horizontal? Justify your answer
- What roles do solvent, density and polarity play in liquid/liquid extractionIn recrystallization, fluted filter paper is used instead of a regular cone because it minimizes its contact with the glass funnel. Why is this important?Take 100ml of the Foam Bath that contains Sodium Laureth Sulphate Cocamide DEA and add sodium chloride solution in incremental amounts whilst stirring, until more than 5% has been added. Note any physical changes that occur during the addition and stirring process.
- Acetone and isopropyl alcohol are generally not suitable for use in extraction, but are frequently used as recrystallization solvents. Explain7. Would it work to take the melting point by using the same capillary tube for both trials? Solid melt(1) -solidify melt(2)-10) What is the purpose of a brine wash (saturated sodium chloride solution) in a liquid/liquid extraction? a) Sodium chloride is alkaline and, therefore, is a good way to neutralize acidic species such as HCl or H2SO4. b) Washing with brine is convenient way to remove residual water from the organic layer prior to treating the organic layer with a solid drying agent. Sodium chloride is an organic soluble material which provides a "seed" which c) encourages crystal growth. d) Sodium chloride aids in dissolving materials that are typically insoluble in both organic and aqueous media.
- Which of the following statements is true when considering temperature during a recrystallization? More than one answer may be correct. Using ice to cool the sample will speed up the crystallization process so that large crystals will be formed. It is important that the sample is dissolved in just enough hot solvent. O Ideally the hot solvent used will keep the impurities dissolved OR not dissolve them at all. Enough cold solvent should be added to dissolve the sample BEFORE heating it past its boiling point.Based on the melting point of your impure solid, you look at the given samples and believe you havecompound A. Compound A is recrystallized using a mixed solvent system of ethanol and water. You add1 ml of hot ethanol to your sample and it doesn’t completely dissolve. You continue to add hot ethanolbut there isn’t any change. Some solid remains. What should you do next?How can you tell that a compound is impure? (or pure?) What are the characteristics considered when taking a melting point? What is recrystallization? What is happening on a molecular level (videos are provided) 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?