Enumerate three properties of a good extracting solvent in liquid-liquid extraction.

Q: Why are some of the detectors listed unsuitable for HPLC?

A: HPLC  is applicable for the use with solvent that has UV absorbance. A UV detector cannot be used…

Q: 1. What is drying to a constant weight? 2. Aside from sieving, what other methods are used to…

A: The detailed solution is shown below.

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: Describe the sample properties that would be suitable for; i) Gas chromatography (GC) analysis ii)…

A: GS and HPLC are the techniques to separate compounds from mixtures .These are nalytical methods of…

Q: liquid-liquid extraction, e ne twice.

A: This is a multiple questions. According to guidelines in multiple questions we can solve the first…

Q: What is Low-excess-air firing (LEA)?

A: Given: Low-excess-air firing (LEA)

Q: Show TWO (2) characteristics of the core enhanced technology that contribute to better separations,…

A: A question based on analytical separations that is to be accomplished.

Q: cadmium from downstream runoff was obtained using an adsorber. Determine the mass of Cd adsorbed if…

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Q: what is the difference between liquid phase extraction and solid phase extraction

A: A question based on analytical process that is to be accomplished.

Q: How can you vary the retention factor and selectivity factor?

A: Retention factor is a variable which indicates the time duration a component spends in the…

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

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

Q: Why is it important to pre-treat the solid before leaching?

A: It is important to pre-treat the solid before leaching because of Agglomeration ( this stage…

Q: What are the advantages and disadvantages of liquid-liquid extraction method?

A: Principal of liquid-liquid extraction method :

Q: List the advantages and any disadvantages of SFE compared to liquid-liquid extractions.

A: Advantages of SFE(super critical fluid extraction) over liquid-liquid extraction Speedy process…

Q: The plot of retention time versus detector signal in chromatography called?

A: In the GC-plot, the detector response signal is at the y-axis, and the retention time is at the…

Q: How does temperature, flow rate of carrier gas, boiling point and column suupport affect gas…

A: Explanation. Retention time-     Retention time is the amount of time a compound spends on…

Q: - what are The Principle and process of chemical Vapor Deposition (CVD) ?

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Q: which component in the HPLC, pushes the mobile phase through a column?

A: To determine: which component in the HPLC pushes the mobile phase through a column

Q: Describe the injection moulding process and distinguish between the injection moulding of TP and TS…

A: Injection moulding process is a method in which plastic materials are injected and are heated or…

Q: Explain the working of air stripping system?

A: To find: The working of air stripping system

Q: Name the disadvantages of cloud point extraction technique.

A: A question based on analytical process that is to be accomplished.

Q: What types of flow meters are used in gas chromatography?

A: ANSWER IS

Q: Point out TWO (2) strategies to increase selectivity in solid phase extractions.

A: A question based on analytical separations that is to be accomplished.

Q: Describe how you would prepare a sample for TGA analysis if it were provided in the form of: (i)…

A: Thermogravimetric analysis (TGA) of polymers is conducted to measure weight changes as a function of…

Q: It refers to the general term of adsorbent media used to visualize chromogenic compounds. A.…

A: Chromatogram refers to the general term of adsorbent media used to visualize chromogenic compounds.…

Q: Solve this

A: Solid phase extraction is technique of preparing sample with help of solid adsorbent. It is used to…

Q: Define the following terms used in HPLC:                      (d) sampling loops             (e)…

A: The following terms used in HPLC can be defined as :

Q: It is used with samples in MALDI system to help ionization of the sample and then irradiated with…

A: The objective of the question is to select one of the given options based on the given statement…

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: Choose the appropriate techniques for degassing the mobile phase of HPLC. I. Ultrasonic II. Boiling…

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Q: a) Solid phase extraction E

A: In this question, we have to tell about which pre concentration method would be right for tomato…

Q: What is the retention factor of a sample when after injectiion the void time (tM) took 4.18 sec? The…

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

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Q: I) Choose the Correct Answer from the Multiple-Choice List (10) 1. Which of the following is not a…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: Carbon nanotubes can be produced by ..method * chemical vapor deposition Sol-Gel physical vapor…

A:

Q: 4. Phthalate and formate ions can be separated using Ion Chromatography. Data obtained for a sample…

A: A question based on analytical separations that is to be accomplished.

Q: What is quantitative transfer and why is it used?

A: Qualitative transfer: this term is  used  whenever  a  solution/  suspension  of  precipitate  is…

Q: identify and describe 3 methods for emulsion preparation

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Q: Explain the fuctions of each part of the reflux set-up

A: Reflux setup consist of three parts -- 1) A heating system 2) a round flask 3) a condenser.  It is a…

Q: What is the result of applying too much sample to the TLC plate? Select one: Some of the sample…

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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: How column is developed and solvent selection is done in HPLC?

A: HPLC stands for High-pressure liquid chromatography or high-performance liquid chromatography.HPLC…

Q: What type of materials can be used as the stationary phase for column chromatography? O Inorganic…

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Q: Prepare a procedural flow chart that provides a simplified overview of the entire extraction…

A: The procedural flow chat of extraction process is explained in step 2.