Answered: This gas chromatogram was obtained at a…

This gas chromatogram was obtained at a constant oven temperature of 168°C. How could this separation be improved? Give specifics and explain why it would work better. 10 9

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter27: Gas Chromatography

Section: Chapter Questions

Problem 27.16QAP

See similar textbooks

Related questions

Q: 3) Draw the molecular orbitals shapes which result from the combination of the following atomic…

A: Molecular orbitals are formed by the combination of atomic orbitals. When atomic orbitals combine,…

Q: Please correct answer and don't use hand raiting

A: The given buffer contains 0.48 M weak acid (NH3) and their conjugate acid 0.37 M ammonium bromide…

Q: What is the pH of a 0.0360 M solution of HONH₃Cl (Kb of HONH₂ is 1.1 × 10⁻⁸)?

A: The problem is asking for the pH of a solution of HONH3Cl. HONH3Cl is the conjugate acid of the weak…

Q: Using the drawing space below, draw the mirror image of the following molecule: Br CI OH Once you…

A: Approach to solving the question: To draw the mirror image of the given molecule,Place the given…

Q: After studying your printed calibration graph, answer the following questions. a. Which variable is…

A: a. Dependent Variable is plotted on the y-axis (note: photo of the calibration graph is blurred, the…

Q: (#5) which compound is most consistent with the following mass spectrum? (choose the best from the…

A: · The most intense peak (base peak) is around m/z 43, indicating a common fragment. This is often…

Q: Look up anastrozole in the Merck Index. If this molecule underwent hydrolysis, what would the…

A: Hydrolysis typically involves the breaking of bonds with the incorporation of water. Given that…

Q: Please help rewrite the chemicals

A: According to Le Chatelier's principle, if you add the heat reactant side, the endothermic reaction…

Q: 9. When the alkenes below are subjected to ozonolysis, which ONE gives the product at the right as…

A: Step 1: OzonolysisOzonolysis reactions take place in two steps: (1) Initially ozone attacks alkene…

Q: Based on the law of conservation of mass, how many grams of oxygen should be produced?Water →…

A: The law of conservation of mass states that matter cannot be created or destroyed in an isolated…

Q: 34. NO AI USE

A: The pattern of a triplet, pentet, sextet and a triplet is characteristic for a butyl group. So, the…

Q: Only 100% sure experts solve it correct complete solutions okk I have 1 attempt left I done but…

A: Bond enthalpy, also known as bond energy, is the amount of energy required to break one mole of a…

Q: Rank the compounds in the group shown below in order of increasing boiling point: OH 2 CO A) 2<3<1…

A: The boiling points of the compounds depend on their molecular structure and the types of…

Q: Please correct answer and don't use hand raiting

Q: Calculate the pH of a solution obtained by mixing equal volumes (1 mL each) of 0.101 M H2SO4 and…

A: First, we need to identify the reaction that occurs when H2SO4 and NaOH are mixed. H2SO4 is a strong…

Q: Please correct answer and don't use hand rating

A: IUPAC names of the given structure: questionIUPAC…

Q: Please correct answer and don't use hand raiting

A: Step 1: To answer this question, first we have to use the ideal gas law equation. From the ideal gas…

Q: For each reaction below, predict the major product(s). If the product has asymmetric centers, show…

A: Major products are predicted as:a)b)c) I hope you find it helpful, If you need further assistance,…

Q: Show work, do not give AI/Chatgpt answer.

Q: Predict the major products of the following organic reaction: NC A ? Some important Notes: Draw the…

A: Step 1: Step 2: Step 3: Step 4:

Q: Show work with explanation needed. Don't give Ai generated solution

A: Step 1: Step 2: Step 3: Step 4:

Q: None

A: Part B: compound: Parent name: The longest continuous carbon chain has 5 carbon atoms. Therefore,…

Q: hi! There can be one or more than one answer

A: Step 1: Enantiomers are two compounds that are non-superimposed mirror images of one another and…

Q: 8. please dont submit AI. answer as its wrong

A: Thank you

Q: H2CO3 and PCO2 are related. If I know one do I know the other? Explain.

A: Step 1 The relationship between carbonic acid (H2CO3) and the partial pressure of carbon dioxide…

Q: Please correct answer and don't use hand raiting

Q: Don't use AI.

A: The equilibrium constant Keq is 2.05 × 10−8, it is already expressed in scientific notation in the…

Q: 11-31. An aqueous solution containing dioic acid (FM 132.07) per 100 mL 1 g of oxobutane- was…

A: Titration of Oxobutanedioic Acid: Oxobutanedioic acid is a diprotic acid, meaning it has two acidic…

Q: Rank the following reactions in order of increasing nucleophile strength: Cl-, H2O, CH3-, H2S, HS-,…

A: Nucleophile strength refers to the ability of a nucleophile to donate its pair of electrons to an…

Q: Help with this question please......draw if poss

A: Step 1:Box 1: The reactant is an acid chloride, while the product is a carboxylic acid. The acid…

Q: A kettle containing 0.500 kg of boiling water is heated until evaporation is complete. Calculate the…

Q: solve it please

A: Step 1:

Q: Draw enantiomers for the following compound using perspective formulas. CH3 CH3CHCHCH3 ОН Draw the…

A: Step 1: Step 2: Step 3: Step 4:

Q: what is the name of this compound P4O6

A: Step 1: Oxidation number of PP4O64x + 6(-2) = 04x - 12 = 04x = 12x = +3Oxidation number of P = +3…

Q: Calculate AH rxn for the following unbalanced reaction: SiO2 (s) + HF (g) → SiF4(g) + H2O(1) Be sure…

A: Step 1: GivenBalanced equation:SiO2(s) + 4HF(g) → SiF4(g) + 2H2O(l)Thermodynamic data:ΔHof (SiO2(s))…

Q: 5. Similar to aluminum, elemental iron must be obtained by refining ore through the equation shown…

Q: Show work with explanation needed. don't give Ai generated solution..avoid handwritten Solution

Q: Use a molecular drawing program to construct a balanced equation for the specific reaction of…

A: Approach to solving the question: Detailed explanation:

Q: When the following equation is balanced properly under basic conditions, what are the coefficients…

A: Step 1: Step 2: Step 3: Step 4:

Q: Show work with explanation needed. Don't give Ai generated solution

Q: 1.3 Internal energy is a function of volume and temperature in a closed system of constant…

A: 1.3.1.Given,U=U(V,T)Then the general differential equation for change in internal energy…

Q: : ค Specifically, in the drawing area below draw the condensed structure of what R might be. There…

A: Step 1: Step 2:Mechanism Step 3: Step 4:

Q: I need help calculating ppm 7.5 mg of caffeine in 50 mL = 150 ppm can you help me with the step

A: Approach to solving the question: Detailed explanation: Examples: Key references:

Q: Help me with my study guide

A: Step 1: Step 2: Step 3: Step 4:

Q: Predict the major products of this organic reaction. Be sure you use dash and wedge bonds to show…

A: Step 1: Reaction Nucleophilic substitution reaction in which bond breaking and forming takes place…

Q: Please correct answer and don't use hand raiting

A: Approach to solving the question: alkene react with HI and first of all a stable carbocation forms.…

Q: jp

A: Thank you.

Q: 5. Trinitrotoluene or TNT is, perhaps, the best-known explosive (in classic cartoons, for example,…

A: Question (a): Reagent(s) required to add nitro groups to toluene Answer:The reagent for nitration is…

Q: Give clear detailed Solution. Show work. Don't give Ai generated solution

A: Approach to solving the question:R/S configuration is done on the stereocenter carbon. The center…

Question

This gas chromatogram was obtained at a constant oven temperature of 168°C. How could this separation be
improved? Give specifics and explain why it would work better.
10
9

AI-Generated Solution

AI-generated content may present inaccurate or offensive content that does not represent bartleby’s views.

Unlock instant AI solutions

Tap the button
to generate a solution

Click the button to generate
a solution

SEE SOLUTION

Similar questions

Two components of a 12-mg sample are adequately separated by chromatography through a column 1.5 cm in diameter and 25 cm long at a flow rate of 0.8 mL/min. What size column and what flow rate should be used to obtain similar separation with a 250-mg sample?
Use a suitable model to explain how separation and identification of a mixture of organic compounds can be achieved with a thin layer chromatographic (TLC) technique.
1a) Hexane, CH3(CH2)4CH3, is found to have a long retention time when separated from a mixture. A column with a C18 (18-carbon chain) stationary phase and a methanol-water modal phase is used for the separation. Explain why hexane has a long retention time. 1b)You wish to chromatographically seperate a mixtureof the follwing compunds. Which of the two compounds will be most difficult to seperatate from one another? Why?
A thin-layer chromatography (TLC) experiement was run using three compunds: benzophenone, benzhydrol, and biphenyl. The three solvents that were used with the three compounds were hexane, ethyl acetate, and dichloromethane. Which solvent would be the best for separating these compounds and why?
A student places an unknown sample on a thin-layer chromatography plate and develops it in dichloromethane as a solvent. Only one spot whose Rf is 0.98 is observed. Does this result indicate that the unknown material is a pure compound? If not a pure compound, suggest an alternate procedure to verify the purity of the sample.
4. You analyze a mixture of cyclopentane, pyrrolidine, and tetrahydrofuran by gas chromatography and obtain the following GC trace. H N O cyclopentane pyrrolidine tetrahydrofuran area A = 100 A intensity area B = 70 B area C = 180 retention time (min) a) Label the peaks on the GC trace with the compounds they correspond to. Explain how you made your assignments. (Hint: look up the boiling points of the compounds.)
A mixture of four components (W-Z) was chromatographed on a silica gel column; 11 fractions were collected. Thin-layer chromatographic analysis of the 11 fractions gave the results shown in the figure below. According to these results, which fractions should be combined to give pure samples of W, X, Y, and Z? W X Y N original mixture 2 3 6 7 8 9 10 11
Explain why a chromatographic separation normally has an optimum flow rate that gives the best separation.
Identify the detectors in gas chromatography that can be used for the detection of each type of analyte. More than one detector may be appropriate for a given analyte, and a given detector may be appropriate for more than one type of analyte.
A mixture of benzene, toluene, and methane was injected into a gas chromatograph. Methane gave a sharp spike in 42 s, whereas benzene required 251 s and toluene was eluted in 333 s. Find the adjusted retention time and retention factor for each solute.
Which statement(s) are correct for gas chromatography? A) the components in a mixture can be identified from their retention time. B) the relative peak areas give the proportions of components in a mixture. C) Calibration curves are used to confirms the concentrations of components in a mixture.
A young researcher set out to develop a method for quantifying the polycyclic aromatic hydrocarbon (PAH) content in a contaminated soil sample using open tubular gas chromatography. During the initial stages of method development, the researcher was unable to separate the early eluting compounds, anthracene and naphthalene, with baseline resolution. Select the possible modifications the researcher could make to improve the resolution. use a column with a smaller inner diameter decrease the column length increase the stationary phase thickness increase the temperature choose a different stationary phase