The analysis of ketones using the area normalization method gave the following data: 3-octanone (F= 1.00; peak area=22.0); 3- heptanone (F= 1.15; peak area= 17.5); 3- hexanone (F= 0.925; peak area= 9.5). What is the percent of 3-hexanone in the mixture? 71.2 % 39.5 % 17.2 % 43.3% 34.3 %
Q: A thin-layer chromatography (TLC) experiment was run using three compounds: benzophenone,…
A: on doing A thin-layer chromatography (TLC) experiment was run using three compounds: benzophenone,…
Q: Indicate the order in which the following compounds would be eluted from an HPLC column containing a…
A: As per bartleby guidelines we solved first question for you. Please find the below attachments.
Q: Unknown X mixed in a 50/50 ratio with acetaminophen yielded a melting range of 154-162°C · -…
A:
Q: standardization
A: We know that internal standardization is a more effective technique than external standardization…
Q: 1,8-Cineole is a predominant terpene found in cranberries. The concentration of 1,8-cineole in…
A: Concentration of 1,8 cineole is calculated as given below.
Q: 1,4‐Dimethoxybenzene (0.642 g) was dissolved in 2.0 mL acetic acid in a 25 mL Erlenmeyer flask using…
A: The given problem is related to green chemistry. Given: Reactants- Mass of 1,4‐dimethoxybenzene-…
Q: Question attached
A:
Q: The relative peak areas and retention for a mixture of five fatty acids and standard separated by GC…
A: A question based on analytical separations that is to be accomplished.
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 mixture of the three compounds shown below is separated, using a 2.1x150 mm C8 column in 10-30%…
A: More the polarity less All be the elution vice versa
Q: IDENTIFICATION OF THE COMPONENTS OF THE MIXTURES. A. Sodium Chloride - naphthalene -'Food Color…
A: In sublimation one of the component directly evaporated without changing into liquid state. It is…
Q: The separation and purification processes given below and the method used against them are given.…
A: There are several techniques to obtain or extract the desired product from the given solution or…
Q: can be used in liquid-liquid extraction? I. water-methanol II. water-diethyl ether III.…
A:
Q: Q1) How can you tell, by looking at the refluxing set-up, that the reaction between n-propanol and…
A: A fruity smell of ester is the physical property of an ester which helps in determining the…
Q: Write the equations for the acid-base reactions involved in this experiment. Clearly show the…
A: Introduction: Extraction and filtration of an organic mixture are done on the basis of 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: For each of the following mixtures, suggest a separation technique and explain a basis for your…
A:
Q: Explain the elution sequence (GLC) of: mesitylene<1-phenylethanol<acetophenone.
A: GLC ( gas-liquid chromatography ) : it is a separation technique . there are two phases , stationary…
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 IS THE CHEMICAL RECTION FOR THIS PROCEDURE 5-Amino-2-chlorophenol To a 250 mL Erlenmeyer…
A: The solution of the question is given below:
Q: 6) You are given a mixture of organic compounds suspected of containing various amines (e. g.…
A: Solvent extraction- It is a technique used to separate compounds based on their relative solubility…
Q: The distribution coefficient, k for a compound “A” between hexane and water is 7.5. What weight of A…
A:
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: For separating the 9H-fluorene and benzophenone mixture, you used silica gel as your solid phase,…
A: Column chromatography is an analytical tool that is employed in the separation of the mixture of…
Q: If a 0.0920 g sample of a 1:1 mixture of 4-nitroaniline and 2-nitroaniline was separated by column…
A:
Q: During an assay of paracetamol by UV an analyst prepares a series of calibration solutions…
A: The concentration of a solution is calculated by the formula: Concentration=Number of molesVolume of…
Q: relative abundance of very close to 1:1. The other had M+ of 112 and M+2 of 114 with a ratio of…
A: Here we are required to provide explanation as bromination of benzen using FeCl3 produces Two…
Q: 1)What is the concentration of the final diluted solution in mcg/mL?(1 decimal) 2) What volume of…
A: Mass of paracetamol = 140.1 mg Volume of solution = 200 mL Concentration = 140.1…
Q: When 1.06 mmol of pentan-1-ol and 1.53 mmol of hexan-1-ol were separated by gas chromatography, they…
A: CONCEPT: Once response factor is calculated, we can calculate the concentration of the unknown using…
Q: Give the molar concentration of HCl with a specific gravity of 1.18 and has 37.0 % (w/w) purity. (
A: Give the molar concentration of HCl with a specific gravity of 1.18 and has 37.0 % (w/w) purity.
Q: These chromatograms were recorded using reverse phase HPLC. |1,2,3 Peaks: 1. Benzyl alcohol 2.…
A: HPLC is based on the principle where the sample (analyte) is distributed between a mobile phase…
Q: Consider the following errors that could be made when running TLC. Indicate what should be done to…
A: Thin layer chromatography It is a separation technique in which the separation is based on the…
Q: The following chromatogram was the output of the analysis of phytosterols in plants by gas…
A: The answer is as follows:
Q: What was the composition of the distillate in Fraction B which was collected in the middle of the…
A: Question 9) at middle of the distillation. we have 50 % of both ethanol and 1-butanol. both are…
Q: WHAT FACTORS CAN AFFECT THE YIELD OF BENZOIN CONDENSATION?
A: The solution is shown below.
Q: Use the T-xy diagram for mixtures of benzene (Mbenzene=78.11 kg/kmol) and kg/mol) at 1 atm to answer…
A: To identify the number of moles of benzene needed to be added to a mixture of benzene and toluene…
Q: Upon screening with TLC (made of silica gel) chromatography using hexane/chloroform (3:1) as eluting…
A: Thin layer chromatography is based on the separation principle. The separation lies on the affinity…
Q: When 1.06 mmol of 1-pentanol and 1.53 mmol of 1-hexanol were separated by gas chromatography, they…
A: Response factor in Gas chromatography (RF) In a standard gas chromatographic experiment, two…
Q: Molecular Weight|Density (g/mL) Equivalent Amount 10.619g 2-napthol 1-bromobutane 144.2 137 1,27…
A: The question is based on the concept of Reaction Stoichiometry. It involves Calculation of amount,…
Q: According to the label, the commercial glass cleaner Windex contains 8 ingredients; however, upon GC…
A: The possible reason can be:
Q: pon screening with TLC (made of silica gel) chromatography using hexane/chloroform (3:1) as eluting…
A: The components on the chromatography paper moves according to their polarity. The spot of the most…
Q: Identify these statements with true or false true or false I. Chromatography utilizes partition…
A: As per bartleby guidelines we solved first three question for you, Please find the below attachment.…
Q: Develop a numbered procedure for the fischer esterification of butyric acid and ethanol including…
A: A question based on Fischer-esterification synthesis, which is to be accomplished.
Q: In a Grignard reaction, 1.4555 g phenyl bromide, 10. g carbon dioxide, 0.5734 g magnesium filings,…
A: Given- 1.4555 g = phenyl bromide 10. g = carbon dioxide 0.5734 g = magnesium filings 30.2 mL of 6M…
Q: 1-Phenylethanol undergoes an esterification with propionic anhydride in the presence of the…
A: Both TLC question and analysis questions have been solved and correct statements are given below
Q: 4. In a distillation of a mixture of acetone (bp. 56°C and dichloromethane bp. 40°C), a fraction…
A: The boiling point of acetone and dichloromethane is 56 oC and 40 oC respectively. The change in…
Q: You were analyzing a mixture of volatile solvents using Gas Chromatography and found out that two…
A: Chromatography is the method for the separation of a mixture with very high resolution, which is an…
Q: Given a sample of anise oil for its phenol (anethol) content determination, 10 ml was used as sample…
A: Percent composition of an compound is defined as the amount of the that compound divided by the…
Q: When a mixture of three compounds ( is purified by column chromatography using different…
A: The chromatography will be expressed as the mechanism which can be utilized to the spotting species…
Step by step
Solved in 2 steps with 2 images
- 2.1g of sample are dissolved in methylene chloride and the sample is extracted with an aqueous solution of acid and base. Three compounds are isolated - 0.7g of ethyl p-aminobenzoate, 0.6 g of acetanilide, and 0.5 g of benzoic acid. Calculate the % composition of ethyl p-aminobenzoate in the recovered mixture. (Round the answer to 1 significant figure. Give just the number, not a % sign.)The melting point of Borneo is 206-209oC and 212-214oC for isoborneol. What could we predict for the melting point range of the product isolated from our experiment, the reduction of camphor with NaBH4?3.0cm³ of redistilled sebacoyl chloride was obtained (density =1.12gcm-3).And dissolved in 50cm³ of dry dichloromethame . 2.2g of diaminohexane was dissolved in 25cm³ of water . 1. Calculate the molar ragione of diamine to acid chloride used 2 .This time using 1.6g of diaminohexane ,calculate the new molar ratio
- You suspect a given substance, unknown X, to be either pure acetaminophen (melting point = 169°C) or pure 1,4-dihydroxybenzene (melting point = 172°C). Subsequently, you perform a mixed melting point analysis by making the following three samples that yield the results below: · - Unknow X alone yielded a melting range of 165-169°C · - Unknown X mixed in a 50/50 ratio with acetaminophen yielded a melting range of 154-162°C · - Unknown X mixed in a 50/50 ratio with 1,4-dihydroxybenzene yielded a melting range of 169-172°C Given the data above, what is the identity of unknown X? (Multiple Choice: Only one answer is correct, and only one answer can be selected) A. 1,4-Dihydroxybenzene B.Neither acetaminophen or 1,4-dihydroxybenzene C. AcetaminophenWhich of the following is expected to achieve the best recovery of an organic compound from an aqueous solution? 1.Three extractions with 20 mL of ethyl acetate per extraction (60 mL total) 2.Two extractions with 30 mL of ethyl acetate per extraction (60 mL total). 3.One extraction with 60 mL of ethyl acetate. 4.In theory these extractions yield identical recoveries of the organic compound.WHAT FACTORS CAN AFFECT THE YIELD OF BENZOIN CONDENSATION? PROCEDURE To a six inch test tube was added thiamine hydrochloride (0.65 g), followed by water (2mL). The mixture was gently shaken until homogeneous, and then ethanol (7.5 mL)was added. Finally, sodium hydroxide (10%, 1.5 mL) was added and the mixture wasgently stirred to ensure complete mixing.Benzaldehyde (3.8 mL) was then added at room temperature in one portion with gentlestirring. The pH of the resulting reaction mixture was determined and adjusted to >10by dropwise addition of 10% sodium hydroxide. The reaction mixture was then partiallysubmerged in a 65 °C water bath2 and the progress of the reaction was periodicallymonitored by TLC analysis.Once TLC analysis indicated that the reaction was complete, the reaction mixture wascooled to approximately room temperature, and then chilled in an ice-water bath. Theresulting precipitate was collected by vacuum filtration and air-dried. The crude productwas purified by…
- What is the chemical reaction when completing extraction experiment and using 100mg Benzoic Acid, 2ml H2O and CH2Cl2 each? What is the chemical reaction when completing extraction with 4-chloroaniline and adding in HCl?WILL HEXANE DISSOLVE fenethylline IN GC-MS?Volume of acetic anhydride: 2.98 mL Mass of salicylic acid: 1.00 g Mass of aspirin recovered: 0.67 g Show that mmol of aspirin recovered divided by mmol of limiting reagent x 100% gives the same % yield (please explain) Thank you.
- We want to extract terpenoids from an aqueous sample by continuous liquid-liquid extraction. Which of the following solvents is not suitable for this purpose? Why? Propanone (acetone), dichloromethane, heptane.How do you construct a flow chart using extraction to separate a mixture of the 3 solids used below if dicholoromethane is the solvent and any other reagents can be used. The 3 solids are: pyrazole, p-chlorobenzoic acid, and benzophenone.If a 0.0920 g sample of a 1:1 mixture of 4-nitroaniline and 2-nitroaniline was separated by column chromatography, and the recovered fractions weighed 0.0191 g ( 4-nitroaniline) and 0.0200 g (2-nitroaniline), what was the percent recovery of these two isomers? 20.6% 43.5% 21.7% 42.4%