In Thin Layer Chromatography，why does the least polar of the analytes （biphenyl）have a higher Rf value and travel futhest in dichloromethabe（eluents）？

Q: 8. A mixture of five alkyl iodides is separated by gas chromatography using a column packed with…

A: To find out the resolution of the following peaks.  (a) 2 and 3 (b) 4 and 5  (c) 5 and 6

Q: 1. What is paper chromatograpy? 2. What are the stationary phase and mobile phase in paper…

A: 1) Paper chromatography is the analytical technique used to seperate coloured compounds in a mixture…

Q: 3. Would you expect an alcohol or an ether to have a higher R¡ value on silica gel thin layer…

A: TLC is an analytical technique which can be used to monitor the organic reaction transformations.…

Q: In kool aid chromatography, why does reducing the dilution of 2-propanol result in its decrease in…

A: In Kool aid chromatography, different colored dyes are separated using a mobile solvent phase and a…

Q: A particular mixture was seperated into three components usin paper chromatography. the Rf value of…

A: Rf value is the ratio of distance travelled by a given component to the distance travelled by the…

Q: same Rf

A: Paper chromatography is the simplest technique to separate the colored compounds, polar-non polar…

Q: A particular mixture was seperated into three components usin paper chromatography. the Rf value of…

A: In chromatography plate, the mobile phase is the one which carries the component of the mixture with…

Q: Is it possible to detect metal complexes of organic acids with thin layer chromatography?

A: Thin layer chromatography, abbreviated as TLC, is used to identify the element or compound present…

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: What would be the effect of changing the mobile phase in the base/base extration of 3-nitrotoluic…

A: Mobile phase components should be non-hazardous and non-toxic. They should not pose any health…

Q: Why do the spinach's pigments become separated during the development of the chromatogram?

A: Chromatography is an important analytical method used to separate mixture of chemical substances…

Q: During a Thin layer chromatography (TLC) analysis of crystallized  napthalene, What would be the…

A: Interpretation: To explain the effect of addition of acetic acid to crystallized naphthalene during…

Q: What controls the mobile phase flow rate in ascending TLC or paper chromatography? Do you think it…

A: The answer is given below

Q: do you think that a dye with a high retention factor is more soluble or less souluble in the solvent…

A: Retention factor is defined as the ratio of the distance travelled by the solute solution to the…

Q: A thin-layer chromatography (TLC) experiement was run using three compunds: benzophenone,…

A: A thin-layer chromatography (TLC) experiment was run using three compounds: benzophenone,…

Q: While preparing the mobile phase to run a monoamine neurochemical HPLC analysis, you miscalculated…

A: HPLC- High perfomance liquid chromatography is an advanced analytical technique used to identify and…

Q: What causes the ethanol/isopropyl alcohol to rise up in paper chromatography?

A: A mixture is a type of matter which is composed of two or more substances. These are called…

Q: Which of the following is TRUE for a reversed phase chromatography experiment? i. Less polar…

A:

Q: Doe hydrophobic silica gel act as non-polar stationary phase in TLC making the process as reverse…

A: Reversed  phase chromatography  have  long chain alkyl chains which are non polar in nature .

Q: You are monitoring the reaction A --> B via periodic GC analysis. Initially, you only see one peak…

A: GC analysis is analytical technique by which separation of chemical mixture into its constituents…

Q: 2. Do compounds always elute in the same order on a TLC plate and on chromatography column? Why or…

A: TLC stands for thin layer chromatography

Q: Explain how TLC and column chromatography can be used together to ensure the perfect separation of…

A: Chromatography is a technique for the separation of a compound from the mixture. The column…

Q: Suppose your TLC plate looks like the image below (ran 1:1 ratio ethyl acetate/hexane). What is the…

A: Rf = distance travelled by component  divided by distance travelled by solvent .  Rf = 1 cm / 6.8 cm…

Q: Which substance is best to run the column chromatography? a)The solvent that is very polar B)The…

A:

Q: The following Rf values were computed from a normal phase chromatography experiment. Arrange them…

A:

Q: a pigment in the thin layer chromatography traveled beyond or farther than the solvent front.…

A: As a pigment in the thin layer chromatography traveled beyond or farther the solvent front therefore…

Q: Compound A has a lower affinity for the stationary phase than compound B and can dissolve well in…

A: Compound A will elute first

Q: Would you expect that changing the solvent will change the Rf value of the specific solute? Why? 6.…

A: 5) on changing the solvent, the Rf value will change because the polarity of the solvent will change…

Q: 1. What is paper chromatograpy? 2. What are the stationary phase and mobile phase in paper…

A: Answer

Q: 5. If we used a 1:1 ligroin.ethyl acetate solution as the eluting solvent for column chromatography,…

A: Beta-carotene is non-polar colored pigment.

Q: How complexation of diclofenac sodium with hydroxy propyl beta-cyclodextrin by high pressure liquid…

A: Diclofenac sodium is a drug used to reduce pain, reduce swelling and joint stiffness (due to…

Q: How might the Rf values of colorless substances be determined? That is, how could the colorless…

A: we use locating agents which reacts with the substance to form colored compound

Q: How does increasing the polarity of the developing solvent affect the Rf of a compound on a silica…

A: TLC stands for Thin Layer Chromatography. This process is basically used for the differentiation of…

Q: For what type of separation would you use ion exchange chromatography (IC)?

A: Ion exchange chromatography separates ions and polar molecules based on their affinity to the ion…

Q: Z and E -oct-3-en-2-ol is hard or easy  to separate in thin layers in chromatography?

A: Greater the polarity difference between the two components of a mixture easier will be the…

Q: How could you prepare a sample of pure (S)-naproxen from a sample of racemic naproxen using…

A: solution;- structure  of  (S)- naproxen and  (R)-naproxen  drawn below;-

Q: (b) In a chromatographic analysis of low molecular-weight acids, butyric acid and isobutyric acid…

A: Given,  Retention time for butyric acid = 7.63 min  Retention time for isobutyric acid = 5.78 min…

Q: Was your column chromatography separation of the three compounds in clove oil successful? Explain…

A: g)

Q: 7. Which of the following compounds will elute LAST in a reverse phase chromatography? A. ONF

A: In reverse phase chromatography, the stationary phase is non-polar and mobile phase is polar.

Q: 3. Compound A has an Rf of 0.75 and compound B has an Rf of 0.35. Which compound will elute first…

A:

Q: 4. a. What physical property of a compound predicts whether that compound travels slowly or rapidly…

A: Gas chromatography is an analytical method to separate the components of a mixture in a sample by…

Q: QUESTIONS IN THE COLUMN CHROMATOGRAPHY PART OF THIS EXPERIMENT: 1. In what order would you have to…

A:

Q: Why are peak areas used instead of peak height in Reverse Phase HPLC of Caffeine and Benzoic Acid?

A: In case of carrying out HPCL of caffeine and benzoic acid, peak heights are better option for…

Q: Two compounds A and B from GC on two open tubular columns contains a XY-1 (100% methyl) and a XY-2…

A: In gas chromatography, a more polar group interacts more with the stationary phase (usually silica…

Q: . What factors can affect a solute's Rf value in thin-layer chromatography? 2. Why is it necessary…

A: Answer - According to the question - Rf values and reproducibility can be affected by a number of…

Q: Use a suitable model to explain how separation and identification of a mixture of organic compounds…

A: The mixture indicates the presence of two or more components of a substance in nonspecified molar…

Q: Explain your reasons for choosing which solvent would be most effective in separating the green from…

A: From the retention value, it is clear that in mobile phase I the Rf values for both green and blue…

Q: thin layer chromatography: What would happen to the Rf value of a compound if you increased the…

A: One of the methods of identification of the individual compounds from a mixture of compounds is TLC.…

Q: 1. In the chromatography plate there are three solutes that move forward: 2cm, 2.5cm and 3cm Which…

A: