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: 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: What complications would a dried-out column (solvent level is below the top of the silica) introduce…
A: Answer
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: In glucose estimation using Benedict's Reagent, briefly explain what would happen if the water…
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Q: Mention one disadvantage of a capillary column as compared to a packed column
A: Please find your solution below : Capillary and packed columns are the two types of columns that are…
Q: Why is there a need to correct conductivity of the sample solution
A:
Q: How was the precipitate obtained after filtration? (A By scraping from the filter paper and…
A: Filtration- the process in which solid particles in a liquid are removed by the use of a filter…
Q: This experiment is about column chromatography of fluorenone. Complete the table
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Q: What is the application of Sodium Chloride Solution in Paper Chromatography?
A: As per our guidelines, we are suppose answer the first question only. So I request you to repost for…
Q: A colored band shows an excessive amount of tailing as it passes through the column. What can you do…
A: Given problem, A colored band shows an excessive amount of tailing as it passes through the column.
Q: Why is neutral medium or slightly alkaline medium more suitable for Mohr's method and What are the…
A: A neutral medium or slightly alkaline medium more suitable for Mohr’s method and what are the color…
Q: a) Discuss the effect of solvent polarity on Rf-values. b)Explain how the Rf (Retention…
A: Since you have posted two questions, we will solve first question for you. Please repost other…
Q: Why do we need to add sand on top of the silica in column chromatography? What could happen if we…
A: The presence of different compounds in the mixture is separated by employing the separation methods.…
Q: In chromatography, if the temperature of oven increases, what will be its effect on retention time…
A: Chromatography It is the separation and purification technique used in which a stationary phase and…
Q: Why after addition of group reagent to ions solution and centrifuge the filtrate is discarded?
A: In six different groups, cations are classified. classification is based on the reagent used to…
Q: How was the precipitate obtained after filtration? a. By drying the precipitate on the filter paper…
A: The precipitate is obtained by drying the precipitate on the filter paper using a desiccator.
Q: When a mixture of A and B were subjected to paper chromatography, A moved up higher than B.…
A: A mixture is separated into components with the help of chromatography. In paper chromatography, the…
Q: Why is it not necessary to dry the Erlenmeyer flask between each trial?
A:
Q: Which is more polar, the water solvent or the chromatogrphy paper?
A: In paper chromatography, paper is made up of cellulose in which there are various hydroxyl group…
Q: A 72.0 g sample of an organic solid is dissolved in 180mL of water. The solid is extracted using one…
A: A question based on analytical separation that is to be accomplished.
Q: Based on the information given, what separation technique(s) is/are most likely feasible? please…
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Q: (a) Which of the following parts in a gas chromatography (GC) system is/are heated up during…
A: (A) A gas chromatography (GC) system is/are heated up during operation in injector part. (B)…
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Q: What are the possible reasons why there are no spots on the Developed Plate after analysis?
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Q: Explain the working of fixed-bed carbon solvent recovery system.
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Q: Briefly describe on how peptization may occur during washing process of pure compound
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Q: The eluent is to be below the 1.5 cm line on the chromatographic paper. Describe the expected…
A: Introduction- Thin layer chromatography(TLC) is a separation technique where the compounds are…
Q: If insoluble impurities eg. dust, tissues, filter paper etc were mixed with the sample how will…
A: Melting Points:- The melting point of a substance is defined as the temperature at which it melts.…
Q: The partition coefficient for compound A between hexanes and water is 12. Assume 10 g of A is…
A: Partition coefficient of compound A between hexanes and water = 12Mass of compound dissolved in 100…
Q: Why should you know the composition of the weighing form? a. So that it can be washed properly b.…
A: Composition of the compound tells about the mass .
Q: What is the other term for mobile phase in chromatography? (Eluant, Eluate, or Solvent)
A:
Q: This is the graph for gel filtration chromatography. Can you please explain why the graph has the…
A: Gel filtration chromatography is a variant of size exclusion chromatography that can be employed to…
Q: applications
A: Let us discuss the principle of size exclusion chromatography: Here the selection of molecules is…
Q: What error is introduced into the determination of an Rf value if the top is left off the developing…
A: In chromatographic technique, the components of a mixture are separated by using a developing…
Q: In most distillations, the total volume of liquid obtained (distillate + residue) is not equal to…
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Q: How to determine which is the most polar and least polar in REVERSE PHASE thin-layer chromatography?…
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Q: In the experiment, A=0 is set with a curettes containing pure deionized water. Suggest a reason why…
A: Most of the solutions used for studying the UV-visible spectra are prepared in de-ionized water.
Q: During Buchner filtrati on a portion of the filtrate isused for swirling the resi due into the…
A: SOLUTION: Step 1: A Buchner funnel is a piece of laboratory equipment used in filtration. It is a…
Q: Determine the order of inhibition time of hexane, hexanol and benzene compounds in the reverse phase…
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Q: Polyacrylamide gels (PAGS) are made by mixing acrylamide with bisacrylamide as a crosslinker. The…
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Q: In column chromatography, a) what constitutes the stationary phase, and b) what is the mobile phase…
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Q: Why is a calibration curve necessary for experiment of determination of phosphate in water?
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Q: c) In one paper chromatography, the Rf for spots X and Y are 0.5 and 0.35 respectively. The solvent…
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Q: Draw the structure of EDTA (knowing that is the ethylene diamine tetra-acetic acid) and explain why…
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Q: What is a correct statement regarding straight (normal) phase silica gel chromatography of compounds…
A: Answers are explained below.
Q: In paper chromatography, what could happen if the lid was not immediately put on the beaker? a. It…
A: The paper chromatography performed with volatile solvent or may be mixture of volatile compounds.
- Differentiate the types of pipettes according to calibration.
- Differentiate a transfer pipette from a graduated pipette.
- Give the rule in reading the meniscus when measuring colored and colorless solutions.
- Compare and contrast the following types of pipettes:
a.) Serological and Mohr
b.) Oswald-Folin
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- In the organic chemistry experiment of an Extraction of crude napthalene and benzoic acid dissolved in ethyl acetate solvent. Why are multiple small extractions better than 1 large extraction? Explain. Prove this with mathematically.Why is a filter paper preferred over a sintered glass filterIn vacuum filtration, the filter paper should be wet before the final product solution is poured into the buchner funnel. Explain why such an action should be implemented.
- Explain why it is needed to filter the solvent before introducing it to the HPLC systemMention one disadvantage of a capillary column as compared to a packed columnUsing a spectrophotometric technique, the phosphorus content in a mineral will be prolonged. The procedure used is described below: 8.35 g of sample are dissolved and treated so that all phosphorus is converted to the blue orthophosphate complex and made up to volume with distilled water end of 100 ml. The transmission of the resulting solution is 30.6%. If the orthophosphate standard solution of sodium, which is treated in the same way, and which has a final concentration of 2.467x10-4 M, gave a transmittance of 20.5%, calculate the phosphorus content in the driven sample in ppm Na3PO4.
- What is inert gas regeneration method?Why after addition of group reagent to ions solution and centrifuge the filtrate is discarded?During Buchner filtrati on a portion of the filtrate isused for swirling the resi due into the funnel and the pump is reconnected. Why do you use the filtrate here instead of water?
- How will you increase the measured yield of recrystallized benzoic acid? The receiving flask from hot filtration should not contain a little amount of solvent. Activated charcoal was not introduced to the solution. During cold filtration, a fluted filter paper was used. After hot filtration the solution was filtered immediately.for specialized fractionating column in a experiment, there are ways to increase the surface area for reflux. what is the trade-off that must be made when considering the choice of fractionating column vs fractional distilliation?Explain briefly a proper technique to use burette.