Consider the mordant dyes and alizarin red S results, specifically focusing on the use of copper (II) in solution. The dye was (Select ) to water, (Select] to cyclohexane, [ Select ] to diethyl ether and (Select] to the 5% H2O2 solution.
Q: need this answer in detail. don't copy elsewhere I will downvote . A separation of the mixture of…
A:
Q: Experiment - Recrystallization Weight of crude acetanilide % yield Weight of pure acetanilide 2.2 g…
A: Percent Yield: Percent yield will generally be calculated by the utilization of actual mass and…
Q: A 50.0 ml juice extract is colorimetrically assayed using Nelson's test. One milliliter (1.00 mL) of…
A:
Q: Column Chromatography of Spinach Pigments What effect would using pure acetone have on the elution…
A: The mixtures are separated by using a laboratory technique called chromatography.
Q: Which compound from each pair would be collected first when purifying a mixture using column…
A: We know that
Q: After extracting NaOH two times from ether, does the amount of precipitate after adding HCl in both…
A: The acid impurity is removed from the ether (organic layer) using NaOH which converts the insoluble…
Q: Consider a mixture containing 0.5 g of benzil and 0.05 g of benzoin. Your task is to isolate benzil…
A: A mixture of benzil and benzoin are given. a) Isolation of both these compounds is not possible by…
Q: Attached problem
A: If the coloration of the sample is not detected properly or if decolourization of sample occurs,…
Q: Imagine that after isolating two of the three pigments, the last pigment remains near the top of the…
A: after isolating two of the three pigments, the last pigment remains near the top of the column.
Q: Arrange in INCREASING Rf if the mixture underwent paper chromatography with the same solvent system.…
A: Paper Chromatography is partition or adsorption chromatography based on the affinity towards…
Q: 12. Arrange the following in order of increasing Ry on thin-layer chromatography analysis plate…
A: As per the bartleby expert guidelines, I am allowed to answer one question at a time. Please repost…
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: 00 80 60 40 20 0 20 40 60 80 1
A: DISTILLATION Distillation is the process of selectively boiling a component in a liquid mixture and…
Q: DAY 3: Having set aside some of the benzoin for melting range, IR and NMR analysis, weigh the…
A: To show the reaction occurring when benzoin is treated with cupric acetate and ammonium nitrate in…
Q: why is acetic acid used in the mobile phase in HPLC?
A: Acetic acid can be used as a mobile phase additive to improve the separation and resolution of the…
Q: A suzuki reaction using 4-methyl-phenyl boronic acid and 4nitrobromobenzene was ran and then…
A: In simple column chromatography, stationary phase is polar and mobile phase is non-polar. Polar…
Q: The authenticity of sodium nitrite and the presence of impurities of nitrites and nitrates in…
A: Chemical test for the presence of the nitrate and nitrite ions.
Q: A mixture containing heptane, 2,2-dimethylbutane, hexanoic acid and heptanol was separated by…
A: Non- polar components interacts with non-polar compounds. Thus non-polar compounds dissolves in…
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: Draw the synthesis setup for Ni(dppf)Cl2, make sure to include the round-bottom flask, reflux…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
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: 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: A 50.0 mL juice extract is colorimetrically assayed using Nelson’s test. One milliliter (1.00 mL)…
A: Given: 50 mL of original juice is used. 1 mL of the original solution is used to give absorbance of…
Q: How to prepare primary emulsion by Forbes method and why this method is called Extemporaneous?
A: Given: Emulsions and bottle forbes method To find: Primary emulsion by bottle forbes method and why…
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 order of elution do you expect for the 4 parabens, keeping in mind that the stationary phase…
A:
Q: What is the other term for mobile phase in chromatography? (Eluant, Eluate, or Solvent)
A:
Q: Eren, Rochelle, and Sarah were assigned to do a recrystallization experiment using three different…
A:
Q: Describe how you would prepare a sample for TGA analysis if it were provided in the form of: (i)…
A: Thermogravimetric analysis (TGA) of polymers is conducted to measure weight changes as a function of…
Q: A 50.0 mL juice extract is colorimetrically assayed using Nelson’s test. One milliliter (1.00 mL) of…
A: Given: 50 mL of original juice is used. 1 mL of the original solution is used to give absorbance of…
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: (d) For the analyte shown, list the following stationary phases in order of increasing retention…
A: Reverse phase HPLC is reverse of normal HPLC. Here, Stationary phase is taken as non-polar group and…
Q: Let's assume that 5.6 g of crude product was isolated, and 4.19 g of pure product was collected…
A: Melting point of crystal depends on arrangement of lattice
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: 1. Is external force present to influence the analysis? Yes or No? 2. If the solvent is chloroform,…
A: TLC is a good tool for the separation of the sample mixtures. In this technique, the sample will…
Q: Why is sodium chloride added before extraction the aqueous layer with DCM? How does magnesium…
A: DCM refers to dichloromethane and the molecular formula CH2Cl2 is used as a solvent that is…
Q: Chemistry Two unknown compounds A and B with the chemical structures below are separated on a…
A: Chromatography is the technique which is used to do the separation of components from the…
Q: Extraction of the aqueous salicylic acid solutions with 10% ethyl acetate/hexane (density ~ 0.7…
A: During the extraction process, the two layers organic and aqueous settle separately. The one which…
Q: With the methods and GC columns used in organic labs, the volatility of the nitrotoluene products is…
A: The question is based on the concept of gas chromatography. we having given three compounds. we have…
Q: With the methods and GC columns used in organic labs, the volatility of the nitrotoluene products is…
A: Higher the volatility of a substance, shorter is the retention time.
Q: What is the main drawback of using steam distillation in the isolation of volatile oils from its…
A: The process of separation or purification in which the components of a mixture are separated which…
Q: Running the reaction: 2.50 g of benzoin and 0.39 g of tetrabutylammonium hydrogen sulfate were…
A:
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: 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: Using the table on slide 7, what ORGANIC solvent could you use to do an extraction of something from…
A: Since you have posted multiple questions, we will answer the first one for you. To get the remaining…
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: A student designed a flow chart below to separate the compounds by chemically active extraction.…
A: The given scheme is for separation of ternary mixture. First test is done for acid, then phenol and…
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: Is it possible to prepare a 17% dye solution from a 4% stock dye solution? Explain your answer.
A: Given : Stock solution with concentration = 4 % (Assuming by mass) And concentration of solution to…
![Copper Mordant
Cu2+
COPPER
SULVATE
MAZARDOU
Water
Cyclohexane
Hydrogen
Peroxide (5%
Diethyl Ether
Question 3
Consider the mordant dyes and alizarin red S results, specifically focusing on the use of copper (II) in solution.
The dye was (Select]
to water, ( Select ]
v to cyclohexane,
[ Select ]
to diethyl ether and ( Select ]
to the 5% H2O, solution.
Options are:
Completely Resistant
Not Resistant
Partially Resistant](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F20baef4d-c5bc-43fa-97c3-2d6d16873a0e%2Ffc25f8c6-af2c-4026-9c3c-0863af6cf56a%2Fp37lo5c_processed.jpeg&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- A particular mixture was seperated into three components usin paper chromatography. the Rf value of dye A is 0.78, the Rf of dye B is 0.43 and the Rf of dye C is 0.19. What component of the mixture A,B,C is most soluble in the mobile phase and why?A newly synthesized drug was found to have a carboxyl group, an imide and a sulfonamide group. The first type of method to consider in this drug molecule’s quantitatve analysis is: a. Non-aqueous Alkalimetryb. Non-aqueous Acidimetryc. Aqueous Alklaimetryd. Aqueous Acidimetry1. Which of the following may cause an increase in the calculated percent recovery of the recrystallized benzoic acid? a.Adding too much solvent in the receiving flask during hot filtrationb.Using cold water in rinsing the residue from the flask during hot filtration c.Using fluted filter paper during hot filtrationd.Not adding animal charcoal to the solution2. Which set of reagents can confirm that sulfate ions are present in two unkown solutions? a.1.0 M NaOH and excess NH3 b.0.1 M Ba(NO3)2 and 0.01 M KMnO4 c.1.0 M NaOH and 0.1 M K2Zn3[Fe(CN)6]2d.0.1 M Ba(NO3)2 and 1.0 M CH3COOH
- In comparing direct headspace injections with SPMEheadspace injections, later eluting peaks (by GC) arelarger in SPME. Explain why.Despite their structural differences, separation of mixtures of organic compounds (such as the arenes benzoic acid, 4-t-butylphenol, and benzamide) often proves difficult. Silica gel chromatography, however, can be used with some success provided that an appropriate solvent is used to provide optimal separation. Consider, for example, the TLC plate pictured at right after developing and UV visualization where prior to elution, lanes A and B were spotted with 4-t-butylphenol and lanes B and C spotted with benzamide. Which of the following must be true? In the space provided, indicate the CORRECT answers (as 1, 2, and/or 3) then explain your reasoning for all three statements. Benzamide elutes faster than t-butylphenol. The Rf for t-butylphenol is less than that of benzamide. Benzamide is more polar than 4-t-butylphenolA TLC plate showed two spots with Rf values of 0.25 and 0.26. The plate was removed from the developing chamber, the residual solvent was allowed to evaporate from the plate, and then the plate was returned to the developing chamber. What would you expect to see after the second development was complete?
- 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 ratio1) Which of the chemicales used in Paper Chromatography of Metal Ions experiment have hazards associated with them? What are the hazards? Expalin why the ammonia chamber and aueous calcuim sulfide must be kept in faume hood at all times? 2) Expalin the following terms: Retaintion factor, stationary phase, chromatogrhic mobility elution, detection limit, and resolution.As a newly appointed research officer, Marissa has been assigned a task to separate a mixture containing acetone, acetamide and 1,2-dichloroethane using a high-performance liquid chromatography (HPLC) technique. The instrument was equipped with a 40-cm column packed with cyano propyl bonded to the siloxane backbone material. i) List THREE (3) examples of mobile phase solvent/solvent systems that can be used with the column above. ii) Determine the sequence in which the three analytes eluted from the column and explain the underlying principle applied. iii) Sketch the chromatogram that would be produced if the column was replaced with a column filled with C18 hydrocarbon bound to the siloxane backbone material and acetonitrile was employed as the mobile phase. Label the peaks observed.
- Describe and explain the effect(s) on your result for the following possible experimental errors. In each case, specify the component(s) whose percentage(s) would be too high or too low and explain your rationale why these would be changed. (a) After adding DCM to the counterfeit pharmaceutical at the beginning, you didn’t stir or shake the mixture before filtering. (b) Washing the sucrose recovered during the first vacuum filtration with water rather than DCM. (c) During the NaHCO3 extraction, you failed to mix the organic and aqueous layers thoroughly. - B (d) You mistakenly extracted the DCM solution with 5% HCl rather than 5% NaHCO3. (e) You neutralised the NaHCO3 solution to pH7 rather than pH2.Two compounds A and B from GC on two open tubular columns contains a XY-1 (100% methyl) and a XY-2 (50% methyl, 50% phenyl), with the same diameter, thickness and length under the same experimental conditions. The retention times and peak widths are show in the Table 1.Hint: phenyl groups interact more strongly with polar groups than methyl groups. Which compound is more polar? Explain your answerHow is using thiamine as a catalyst rather than cyanide an application of greenchemistry? PROCEDURETo 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…
