Why might it be very difficult to visualize the separation of cis- and trans-2-butene by TLC?

Q: If you were to monitor the reaction mechanism for the hydroboration by TLC (Thin Layer…

A: Principle of TLC is based on adsorption phenomenon. Based on the polarity of the substrate the rate…

Q: 1.) 2.) 3.) Why must the baseline be above the solvent level in the TLC chamber? Why are pencils…

A: 1. When a baseline is above the solvent level in TLC it helps solvent to pass through the starting…

Q: Do you expect benzaldehyde or stilbene to travel farther on a TLC plate? Please explain, being sure…

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

Q: Arrange the following compounds in order of increasing R, on the TLC plate developed with in 60:40…

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

Q: Why mixture of solvents such as ethyl acetate with 5% acetic acid is used as a solvent/mobile phase…

A: TLC (Thin layer chromatography) is a technique to separate the components of mixture. TLC uses a…

Q: In TLC, why does the developing solvent 3:1:1 n-butanol/acetic acid/water climb up the TLC plate so…

A: Thin-layer chromatography (TLC)-It is a technique used for the separation of a mixture of volatile…

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: In what order would the following compounds be eluted on a silica gel TLC plate if they are spotted…

A: Rf value is the ratio of the distance travelled by the analyte and the distance travelled by the…

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: How would you discuss method of separation and identification of compounds in TLC?

A: The laboratory technique used to separate components of a mixture is called chromatography. It…

Q: b. Can a mixture of d- and l-carvone be separated by column chromatography on silica gel using…

A: d-carvone and l-carvone are enantiomers of each other and are a class of monoterpenes found in…

Q: Characterize TLC plate, R, Explain the parotic and aprotic solvents, give example. In the case of…

A: TLC stands for thin layer chromatography.  It is an chromatography technique which is used to…

Q: Methylcyclohexane and methylcyclohexene were separated by gas chromatography in a capillary column,…

A:

Q: Briefly outline why cinnamaldehyde, cinnamic acid and cinnamyl alcohol travelled different distances…

A:

Q: What will be the appearance of a TLC plate if a solvent of too low polarity is used for the…

A: Thin layer chromatography is a technique which is used for the separation of components of a…

Q: 2. What types of species can be separated by RP-HPLC and not GLC? Please explain your answer and…

A:

Q: In carrying out an analysis of a mixture, what do you expect to see when the TLC plate has been…

A: Solvent front in TLC plate:The height reached by the solvent in TLC plate is known as solvent front.

Q: You first separated the components of spinach and then identified them by TLC analysis. Was there a…

A: TLC of spinach means separation of chlorophyll pigment.The different form of chlorophyll found in…

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: I need help darwing a TLC plate  and figuring out the Rf values is the retention factor values We…

A: The crude mixture is the component that is obtained directly from the reaction after its completion.…

Q: Your lab-mate observes a large amount of streaking and blurring of their samples when they visualize…

A: It is the major problem that YTLC plate seems to be blurred in the UV light.  But you can overcome…

Q: If we were to use Toluene as a solvent in a TLC with benzophenone, diphenyl methanol, and biphenyl…

A: TLC has two states - stationary phase and mobile phase. Here Toluene is used as non polar solvent as…

Q: Which of the following pairs of compounds would be most easily separated by thin layer…

A: Usually, the polar compounds are easily absorbed on the surface of the adsorbent and thus, lower…

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: 10. If an eluent of too high polarity is used for the development of a TLC plate, will the sample…

A: The TLC plate have the stationary  phase  Silica and Mobile phase which is solvent . Solvent  may be…

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: Below are the structures of four aromatic compounds A,B,C,and D. Based on the structures and the…

A: Most polar compound tends to have lowest retention factor (Rf). The fastest moving spot would have a…

Q: 4) Would you expect cis-1,2-dimethylcyclohexane and trans-1,2-dimethylcyclohexane to have a good…

A: TLC is a type of chromatography used in separation of non volatile Mixture. Its stationary phase is…

Q: Vhat criteria should you use to determine the solvent for dissolving a sample for TLC analysis? Vhat…

A: the solvent should be 2-3 mm deep so that the spotted sample and the line are not submerged this…

Q: 3 Compare: a) Capillary Electrophoresis with GC and HPLC. b) Separation Versus Preconcentration.

A:

Q: Which of the compounds ( diethyl ether, hexane, benzaldehyde, ethanol ) would be eluted firstly from…

A: Chromatography is a very important tool used in the separation of the compounds. It has two…

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: 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: If the stationary phase and the compound being tested are both polar, will the retention factor (Rf)…

A: Given that both the stationary phase and the compound being tested are polar.

Q: could products be isolated for further analysis suing TLC (thin-layer chromotography) as a…

A: Chromatography is a laboratory technique for the separation of a mixture into its components. The…

Q: 10. (a) Remember the structures of cis- and trans- 1,2-dibenzoylethylene. Which diastereomer would…

A: Trans 1,2-dibenzoylethylene would have a greater affinity for the polar mobile solvent.

Q: A thin layer chromatography experiment is planned to determine the Rf values of four compounds. List…

A: Silica gel is polar in nature.  Polar compounds bind to silica gel in thin layer chromatography to a…

Q: 04. Describe in detail the five basic steps in the thin layer chromatographic (TLC) separation.

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is the order in which the following compounds would he eluted from an HPLC column containing a…

A: To find: The order of elution of the given compounds in HPLC

Q: Why is it important to see the level of solvent in the developing chamber when running a TLC…

A: It is extremely important that the solvent in the developing chamber be lower than the spots on the…

Q: You will run a TLC plate after the CC placing in one spot the original sample of pigments, one spot…

A: Thin Layer chromatography (TLC) TLC is a chromatographic technique used to separate mixtures of…

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: if you wanted to makes the spots travel up the TLC plate further, what solvent ration would you…

A: You know that ethyl acetate is a polar solvent while hexane is a non-polar solvent.

Q: is hexane or 70:30 hexane:  ethyl acetate a better eluent based on their TLC plates and rf value in…

A: Misciblity is main factor which determine that which solvent are best eluent  based on their TLC…

Q: discuss the separation of bisphenol z from phenol on the tlc plate in terms of solubility and…

A: For separating the mixture of bisphenol z and phenol let us first look at their structures.  The…

Q: how does TLC determine if a sample is pure?

A: checking for purity of a sample,  the known sample which is pure(having only one spot) and has the…

Q: With the aid of a well labelled block diagram, briefly describe the functions of the major…

A: When two or more compounds are mixed together in a specific ratio/random way, it results in the…

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…