Solvent front Isolated product Reagent B Reagent A

Q: A student spots an unknown sample on a TLC plate and develops it in pentane solvent. Only one spot,…

A: The retardation factor (Rf) provides the interaction of the substance with the thin layer of the…

Q: Given your choice of Flame AA, ICP-AE, XRF, EI-MS, or none of these, and keeping in mind that cost…

A: The function of Flame AA  is to detects the metal present in a sample. The function of ICP-AE is to…

Q: How do i know my starting material was fully consumed using a TLC plate comparing the raction…

A: TLC means thin layer chromatography is a chromatographic technique used for the separation of…

Q: Calculate the Re value for a spot in a TLC experiment if the solvent moved 14.5 cm and the spot…

A: Given  Distance moved by solvent =  14.5 cm  Spot of Compound moved  from the origin = 6.1 cm  Rf =…

Q: 2 is corrosive, so purging with N2. which is inert, helps to reduce reactivity within the…

A: Infrared spectroscopy is being used to identify the organic compounds by recognizing the functional…

Q: Based on the readings and lecture on emulsions, and the procedures for this lab answer the following…

A: Given dispersed phase Air Oil Water Egg Dispersed phase =…

Q: 1. How does sodium 2-phenylphenolate react with acid and/or base? Draw the acid-base reaction (with…

A: This is a normal acid base reaction in which phenolate is the base and that of H+ is acid, so base…

Q: Answer the question and explain why you chose it in 3 sentences. 2. Reagent blanks are primarily…

A: Reagents blank refers to a solution containing all reagents except the sample whose information has…

Q: I have a Column Chromatorgraphy lab using an alumina, ferrocene: acetylferrocene (50/50 mix) and…

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Q: Which of the ff. turbidity measurements is the most accurate? Angelo Secchi Disk Method Jackson…

A: Answer  All given method for turbidity measurement are correct

Q: solvent front origin

A: In thin layer chromatography the compounds separate based on polarity, the more polar compound move…

Q: You have performed the reaction below and decided to purify the crude product using Br KOH, ELOH +…

A: Concepts of thin layer chromatography.

Q: What is the Rf value for a compound if it moves 3.0 cm from the origin when the initial spot is…

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Q: What is wrong with the following TLC setup? Developing solvent Origin

A: Thin layer chromatography (TLC) is technique used in synthetic chemistry to check the progress of…

Q: Find the Rf value from given data. Thank you

A: In Thin Layer Chromatography, the compounds can be separated by the solvents in the TLC plate. The…

Q: If the TLC chromatogram in the picture was duplicated but using a column, draw the set-up and label…

A: The components on the column moves opposite to that of chromatography paper. The spot of the most…

Q: Thin Layer Chromatography why the non-polar compounds move up the plate most rapidly (higher Rf…

A: TLC is most useful technique to know the extent of the reaction .And the no of compound present in…

Q: The solvent level in the development chamber should be above the level of the spotted compounds on…

A: The solvent level in the development chamber should be above the level of the spotted compounds on…

Q: Why should you not use a ballpoint pen when marking a TLC plate and why does the horizontal line…

A: If ball point pen is used, the ink will travel up with the solvent, just like the samples.  The…

Q: When you prepare your sample to run through the column chromatography , what is the first proper…

A: For the column chromatography the sample should be properly dissolved in an appropriate solvent

Q: What should you do if there are insoluble impurities after heating up your sample in the…

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

Q: Which of the ff. turbidity measurements is the least accurate? Secchi Disk Method Jackson Candle…

A: Answer  All given methods are used for measurement of turbidity

Q: Match each chromatography term with its definition. a hollow tube that is filled with particles…

A: The sequence of answers given below is from top to bottom in the question 1. Packed column 2. Linear…

Q: TLC

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Q: Describe how TLC can help in finding out whether a reaction went to completion or not.

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Q: Name of experiment : Gas Chromatography (GC);Separation of alcohols Q1:Purpose of experiment…

A: Ans. Gas chromatography: Gas chromatography (GC): Separation of alcohols  (1) Purpose of experiment:…

Q: Q2. What does “crude” product mean? Q3. What is the advantage of using Buchner filtration in…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: Draw an HPLC instrument diagram by writing the name of the parts. Define the isocratic and gradient…

A: The analytical method that deals with the separation of the components based on the difference in…

Q: Crystal seeding

A: In this question we have to explain if there is no recrystallization due to the unsaturation of the…

Q: lassify the statements based on whether they describe the method of standard addition, the method of…

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Q: You can perform a TLC experiment even if the solvent level is above the level of the initial spots.…

A: Here I have solved the question

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: Would the spots on the TLC plate in Scenario 3 be visible under UV? Why or why not?

A: Thin layer chromatography is used to separate the non-volatile substances from a mixture. Here, two…

Q: I need to get the rf valuse from a made up value and draw a tlc plate of 30% ethyl actate and 70%…

A: TLC can easily tell whether a reaction is complete or not. On a TLC plate, a polar compound takes…

Q: Which of the following mass analyzers is used in triple arrangement? a. Time of flight b. Quadrupole…

A: Concepts of Mass spectroscopy.

Q: Which of these alternative reactants react with Kco, 2-hydroxybenzoic acid to form aspirin?…

A: A question based on synthesis of aspirin, which is to be accomplished.

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: Peak Retention Time (minutes) Area 1.201 136501204 acetone 2.011 1253056 toluene ortho-product…

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Q: 2-naphthol IR Tables that contains the important peaks for the experimental

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Q: Please help 1. Why should you never create the filter paper as you fold it? 2. Fill in the blank…

A: So the answer as follows :

Q: 1. a) "Solution 1" is made from the addition of water to a portion of the 0.0500 M  Fe3+ "…

A: Given, Molarity of prototype solution = 0.05M Fe3+. Volume of prototype solution = 10.0mL. Volume of…

Q: What are possible sources of loss in an extraction experiment?

A: Extraction is a kind of fundamental technique which is used to isolate one compound from a given…

Q: Pinacl-Pinacole lab What visual criterion is to be used to assess whether the crude reaction product…

A: Pinacol pinacol rearrangement is a type of rearrangement which occurs  in geminal diols and…

Q: what will produce a smaller Rf value if the solvent and paper are both changed?

A: Increasing the polarity of solvent will result in increase in Rf value as the compound in even for…

Q: What can you say about how Norbixin and Beta Carotene will behave in your experiment just by looking…

A: The basic principle of Thin layer chromatography is based on the adsorption phenomenon.

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: Plant pigments in spinach were separated with TLC with cellulose as the stationary phase and 80/20…

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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: The following data was generated by running two TLC plates with four compounds-A, B, C &D (two on…

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only.

Q: When would using Thin Layer Chromotography (TLC) NOT be useful in conducting an oxidation reaction?…

A: Although it is a very simple and convenient technique, one of its limitations is that it cannot tell…