Why is catalytic dewaxing not considered as a separation process?

Q: Explain the principle of working and operation of Dye Penetration Technique Inspection with neat…

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Q: Why is a filter paper preferred over a sintered glass filter

A: Filtration is a method used to distinguish solids from liquids or gases, using a filter medium that…

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: What is inert gas regeneration method?

A: Inert gases form the 18th group of periodic table.  Inert gases like Helium, Neon are used in…

Q: In HPLC, why is purging being done before analysis of samples. Outline the procedure on how purging…

A: High-performance liquid chromatography (HPLC) is one of the separation technique used to analyze of…

Q: Explain how the Rf (Retention Factor)-values can be in agreement or disagreement with the “like…

A: Interpretation -  To explain all about that how the Rf ( Retention factor ) - values can be…

Q: What is the benefit of using fluted filter paper instead of not folding it?

A: “Fluted “ filter paper (LEFT) is used when we wish to separate a liquid and a solid, keeping the…

Q: Study figures 31-6 a & b in chapter 31 (page 863) of your prescribed textbook, and draw separation…

A: 1

Q: Answer ALL parts to this question (a) With the aid of a diagram describe the experimental set up of…

A: Answer- Gas chromatography- Gas chromatography is a term used to describe the group of analytical…

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 order to achieve the best separation of several components of different polarity in a mixture…

A: We know that like dissolves like. In other words, a polar solvent will dissolve a polar compound in…

Q: What are the considerations for choosing the solvent in the extraction?

A: Given: Considerations for choosing the solvent in the extraction.

Q: What is the purpose of drying the remaining solid after extraction under a heat lamp?

A: The process, in which water and other solvent is evaporated from the solid-liquid mixture to form…

Q: What is the purpose of using ether in preparing the dispersion of egg yolk sample? (the answer…

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Q: Explain about Liquid Chromatography technique.

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Q: Why is steam distillation and not fraction distillation used to extract limonene from citrus peels.

A: Steam distillation: It is a purifying technique which includes distilling of water with volatile and…

Q: Demonstrate how to make TLC, and analyze the sample for any purpose, which deemed suitable for you

A: TLC is a thin layer chromatography, a technique used for separating non-volatile mixtures and…

Q: Explain what the liquid-liquid extraction technique consists of

A: Liquid–liquid extraction  also known as solvent extraction and partitioning.

Q: Explain how solid-phase microextraction works. Why is cold trapping necessary during injection with…

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Q: Write the names of four main GC detectors (titles only). Which one of these detectors is used on its…

A: A question about GC detector, which is to be accomplished.

Q: What is a guard column and why is it used in HPLC but not in GC systems?

A: A guard column is a protective column or cartridge installed between the injector and the…

Q: 1. What is the purpose of application of steam distillation method?

A: Applying basics concept of steam distillation purification method.

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: Explain the working of fixed-bed carbon solvent recovery system.

A: An atom is the basic and fundamental unit of matter. An atom consists of electrons and the nucleus…

Q: How would the Rf values change if you used pure dichloromethane (no methanol) as the mobile phase…

A: The dielectric constant for methanol is 30 and that of Dichloromethane is 8.3

Q: What would be the effect of increasing the carrier gas flow rate on the retention rate?

A: Retention time is the distance that the compound cover from the time of injection till the maxima in…

Q: Draw and label a moisture sorption isotherm for any product of your choice at different temperature…

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Q: Briefly discuss how to identify the unknown compound by using mixed melting point method.

A: Mixed melting point calculation is a method for the determination of the identity of the unknown…

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: Explain the working of air stripping system?

A: To find: The working of air stripping system

Q: What is the other term for mobile phase in chromatography? (Eluant, Eluate, or Solvent)

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Q: why is an electro thermal atomizer more sensitive than flame atomizer?

A: The oldest technique used in Atomic absorption spectroscopy is the Flame atomizer.

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

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Q: Why is a filter paper preferred over a sintered glass filter?

A: Filtered paper is made up of fiber and there are numerous holes (obviously of microscopic size) in…

Q: In HPLC, why is purging or initialization being done before analysis of samples, explain.

A: ✓basically following two reasons for using purging and initialization during HPLC sample preparation…

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: Why was n-octanol chosen as a surrogate for natural organic phases? Why not another solvent such as…

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: Which of the three methods, (Use of Separatory Funnel, Decantation or Use of Pasteur Pipette) do you…

A: Given : Separators funnel, Decantation or use of Pasteur pipette.  Transferring large volumes of…

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

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Q: What is the use of the glass rod in transferring liquid reagents?

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Q: the video (liquid-liquid extraction), why is it necessary to turn the separatory funnel upside down…

A: The question is based on the concept of liquid liquid extraction. it is also called solvent…

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: 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: 1.what data must be available when HPLC method is passed on 2.why eluents should be degassed

A: 1.data needed for HPLC: HPLC is High performance liquid chromatography. Chromatography:  It is a…

Q: 2) determine the identity of an unknown solid. Briefly explain why the experimental technique of…

A: The Temperature at which the solid state compound transform into liquid state without changing its…

Q: Why should you leave the crucible cover ajar while heating the sample?

A: In chemistry it is needed to heat a hygroscopic ionic compound to get the water out, and it says to…

Q: Give five Synthetic Applications of Stobbe Condensation in detail?

A: The chemical reaction of an aldehyde or ketone with an ester of the succinic acid to produce…