Include the theory of how molecules interact with and elute from molecular stationary phase of GC GC column (Hint: BP anf Polarity), the information gained from order of elution, and type of column used.

Q: In molecular exclusion (size exclusion) chromatography, molecules have the the longest retention…

A: Molecular exclusion chromatography is base on size of molecules. It is a separation technique that…

Q: A chromatographic analysis is performed with a sample containing toluene and benzene. The column…

A:

Q: Muna Al Naabi in the Analytical chemistry laboratory wanted to separate chlorophenol by liquid…

A: LIQUID CHROMATOGRAPHY(LC):  An analytical technique which is used to isolate a chemical sample into…

Q: 5. Here, you can find an example of a paper chromatography experiment. Use the two Chromatograms…

A: Paper chromatography is a analytical Method to separate coloured components. A drop of a mixture…

Q: Retention time Substance(s) Peak area (%) (min) Crude product Pure product 8.725 1,2-cyclohexanediol…

A: In the analysis of gas chromatography, the evaluation of peak area is one of the most important…

Q: In which mode of chromatography do solute and solvent molecules migrate in and out the stationary…

A:

Q: The height of three peaks; A, B, and C obtained in a gas chromatogram are 20.6 mm, 17.5 mm and 40.6…

A: A numerical problem based on gas chromatography, which is to be accomplished.

Q: How to interept this data to match the structure? It gives the peak/PPM and having trouble matching…

A: The given NMR data is needed to be interpreted and the each signal obtained is needed to be assigned…

Q: 4. The chromatogram below shows the separation of a mixture obtained by gas chromatography (GC)…

A: The principle of separation in gas chromatography (GC) is based on the partitioning of the sample…

Q: The method of internal standard was used to analyze and measure the concentration of chemical X by…

A: Volume of unknown X =3.0 mL  Concentration of Y in the mixture = 1.6 x 10-5 M Volume of Y in the…

Q: You are analyzing a forensic sample for the presence of controlled substances using HPLC. Which of…

A: Detector is given.

Q: 3. Two peaks in a particular gas chromatogram have a retention ratio of 1.25. If this mixture was…

A: The ratio of the retention periods of two peaks is known as the retention ratio in gas…

Q: Which is the correct order of elution of a gas chromatography that has a polar column that contains…

A: The sample, which may be a gas or a liquid, is injected into a gaseous mobile phase during gas…

Q: The gas chromatogram shows three peaks in the spectrum: 3.53 min (area: 20.0 units), 3.85 min (area:…

A: Given, area for first peak at 3.53 min = 20 units            area for second peak at  3.85 min = 130…

Q: A new dye (DYE C) was developed and was analyzed against other dyes using paper chromatography. A…

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

Q: In another chromatography experiment, pure chemical “A” leaves a yellow spot with an Rf = 0.49 and…

A:

Q: . (B) the DART source (direct analysis in real time) is a relatively new MS technique. What is it…

A: DART (Direct Analysis in Real Time) Mass Spectrometry is a modern mass spectrometry technique that…

Q: Which of the following statements about a gas chromatogram is correct? O Tailing indicates that the…

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

Q: Species A and B were separated using column chromatography. The elution time for species A (1) was…

A: The theoretical plate height H = L/N where L is the length of the column and N = (tr)2/(w/4)2 where…

Q: calculate the following for each sample gas chromatograph.  a) retention time for each peak (label…

A: The given plot is redrawn as shown below.

Q: True or False: Liquid-solid  phase column chromatography is used to separate large up to multigram…

A: The above statement is true.

Q: To minimize systematic errors in the separation using TLC, which of the following factors should be…

A: TLC is thin layer chromatography and used for separation and identification

Q: What is the factor that does NOT influence ‘retention time’ of an anlyte in gas chromatography? (a)…

A: Retention time depends upon  the time that solute spends in a column

Q: A mixture of four components (W-Z) was chromatographed on a silica gel column; 11 fractions were…

A: Here TlC plates is given and we have to find out with fraction should combined to get pure sample of…

Q: A chromatogram exhibited three peaks for the compounds A, B, and Cat 14.8, 15.5, and 16.2 minutes,…

A: Chromatography is a method by which a mixture is separated by distributing its components between…

Q: calculate the following for each sample gas chromatograph. a) retention time for each peak (label…

A: Gas chromatography is a technique for separating and analyzing compounds that can be vaporized…

Q: The identity of a volatile petroleum residue is determined by the (size, pattern) of its gas…

A: The identity of a volatile petroleum residue is determined by the (size, pattern) of its gas…

Q: 7. The level of ethyl acetate is determined in colchicines by headspace gas Answer: 0.055. in water…

A: In the given problem the head space gas chromatography technique is used to determine the amount of…

Q: 5-3. Question 5-2 refers to separating a mixture of two high boiling liquids by gas chromatography.…

A: We have find out the answers.

Q: Determine the correlation factor k value for 56% ethyl acetate (EA) in ethyl propionate (EP)…

A: NEANEP=Number of moles of ethyl alcoholNumber of moles of ethyl propionate AEAAEP=1.19…

Q: The figure below shows a portion of a GC chromatogram for a mixture of two aromatic compounds…

A: To find out the time that components A and B spend in the stationary phase.  The chromatogram given…

Q: The following figure indicated the separation 5-hydroxymethylfurfural (HMF), patulin (PAT),…

A: To predict the order of polarity of the given compounds.

Q: A mixture of three components is separated using paper chromatography, and each component is…

A: Given: Absorbance of standard solution- Compound A = 0.72 Compound B = 0.55 Compound C = 0.80 For…

Q: A mixture of three components is separated using paper chromatography, and each component is…

A: Given: Absorbance of standard solution- Compound A = 0.72 Compound B = 0.55 Compound C = 0.80 For…

Q: (b) In column chromatography, the column height/radius ratio is 16:1, stationary phase density is…

A: The question pertains to the determination of the height and radius of a chromatography column in a…

Q: Tim is interested in analyzing for Pyraclostrobin (pesticide) in strawberries using QuECHers method…

A: 1-10 mg of pesticide is on per gram of the fruitThe tim is slicing 500mg fruit i.e. its's possible…

Q: Retention volume in a chromatographic experiment 1) increases with decreasing length of the column…

A: Retention volume VR is the volum of eluent carrier gas admitted to the column between the injection…

Q: 3. The following questions pertain to the two gas chromatograms of the same straight chain…

A: The objective of this question is to show the chromatogram A and broadening peaks indicate possible…

Q: This is a developed paper Chromatogram. What is the Rf of the spot? You must use the given cm…

A:

Q: 24) The method of internal standard was used to analyze and measure the concentration of chemical X…

A: Volume of unknown X =3.0 mL  Concentration of Y in the mixture = 1.6 x 10-5 M Volume of Y in the…

Q: (5) If 200 g of polymer A, 300 g of polymer B, 500 g polymer C, and 100 g of polymer D are mixed,…

A: Molecular mass of polymer is a most  important  parameter and directly related to the physical…

Q: A student used thin layer chromatography to confirm whether he could successfully separate two…

A: TLC means “Thin Layer Chromatography”. This experiment is done on Wattman paper. If the molecule has…

Q: A standard sample contains 15.0 mM of analyte and 25.0 mM of internal standard. The analysis of the…

A: Internal standard method: In analytical chemistry addition of chemical substance to a sample is in…

Q: An analyst was measuring the performance of a HPLC column. The test solute was Toluene (5 µL). The…

A: To find out the mobile phase velocity, number of theoretical plates and height equivalent to…

Q: If retention times found on a chromatogram are 0.60 min for CH4 (=tm), 7.0 min for pentane, 8.0 min…

A: We use the formula below to find Kovat's retention index(I): Kovat's retention index, I = 100*n +…

Q: With the following information for a GC analysis using an internal standard, calculate the…

A: