According to the label, the commercial glass cleaner Windex contains 8 ingredients; however, upon GC analysis only 7 compounds could be identified. Sodium dodecylbenzene sulfonate could not be located in the chromatogram.  Why might this be the case?      A) The sodium dodecylbenzene sulfonate evaporated before analysis could take place     B) The sodium dodecylbenzene sulfonate has a very high boiling point     C) The sodium dodecylbenzene sulfonate elutes at the same exact time as another component of the mixture     Answers A & B     Answers A & C     Answers B & C     Answers A, B, & C

Q: In caffeine recrystallization, explain how recrystallization was performed and how pure caffeine was…

A:

Q: In a thin layer chromatography (TLC) experiment, solute A traveled 20 mm while solute B traveled 30…

A: Here we are required to find which solute has greater affinity for silica gel.

Q: Discuss the reason for chloroform being a good solvent to develop the cannabinoid chromatogram. What…

A: The solvent system that can create maximum separation of the spots is a good solvent for…

Q: Acetylcholine esterase, 3.0 mg, was dissolved in 10.0 mL solution. From this solution, 0.60 mL was…

A: Given data is Amount of Acetylcholine esterase dissolved in 10.0 mL solution = 3.0 mg  From this…

Q: You are given a 1:1 (by weight) solid mixture of vitamin C and vitamin A, and you are going to use…

A: A 1:1 solid mixture of vitamin C and Vitamin A is to be separated from one another by liquid-liquid…

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: Separate a mixture of Vitamin D and Vitamin B2 (riboflavin) by paper chromatography. The stationary…

A:

Q: Run Number 1 2 3 4 Volume of oxalic acid used 25.00 mL 25.00 mL 25.00 mL 25.00 mL NaOH buret: final…

A: The table can be filled as:

Q: A student separates colored compounds A and B (shown in grey in the figure below) using column…

A: A question based on analytical process. Based on the Column chromatography and the polarity index,…

Q: Which of the following statements is written incorrectly?     Benzophenone (1.0 g) was dissolved…

A: Incorrect statement:

Q: TLC is a quick, inexpensive microscale technique that cannot be used to: verify a substance's…

A: The concept and working principle of Thin Layer Chromatography (TLC) are-TLC works on the principle…

Q: She performed a normal phase chromatography to separate the components of an extract. She then…

A: Thin layer chromatography (TLC) and Rf factor

Q: a. Which type of chromatography based on the polarity of the stationary phase was employed in the…

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: Regarding TLC: a) Compounds A and B are analyzed side-by-side by TLC on silica gel. The developed…

A: Thin layer chromatography is a type of adsorption chromatography for the separation of components…

Q: What are the analyses or instruments that are used to verify or confirm if the extracted substance…

A: Caffeine is a naturally occurring molecule found in various plants worldwide, and found in beverages…

Q: Identities of the components in a mixture may be determined by a technique called spiking. Suppose…

A: Spiking is a widely used analytical technique in chemistry for identifying or confirming the…

Q: Question 2 A mixture of cyclohexane (b.p 81 °C) and toluene (b.p 110.8 °C) need to be separated and…

A: Given that, a mixture of cyclohexane (b.p 81 °C) and toluene (b.p 110.8 °C) needs to be separated…

Q: You have a sample of 90 mL cola drink that contains 50 mg of dissolved caffeine. Calculate the total…

A: As stated:90 ml is the initial cola drink volume.50 mg is the starting mass of caffeine in a cola…

Q: Three alcohol bottles were mislabeled in the stockroom: 1-pentanol, 2-pentanol, and 3-pentanol. A…

A: The objective of the question is to draw the structure of the compound using the base peak values.

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: A student analyzed a mixture of amino acids using thin layer chromatography where the stationary…

A: Thin layer chromatography (TLC) is a chromatographic technique used to separate the components of a…

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: What would the gc chromatogram look like when 6.65 g NaBr, 3.78 g NaCl, 7.5 mL of DI water and 5 mL…

A: When NaBr,NaCl and 1-butanol are added together, the halides Reacted with butanol.…

Q: A semi-purified crude extract(SP) was tested against five known phenolic compounds, namely: (1)…

A: To answer questions related to the given chromatogram.

Q: a) What would you see if you ran a Thin Layer Chromatography (TLC) on a mixture of the three solids…

A:

Q: Which of the following statement is false?   a.   Component with the strong attraction to the…

A: The statement, which is false has to be identified.

Q: 5. What criterion is used for the purity of a sample of caffeine?

A: Solution - The criterion that is used for the purity of sample of caffeine is the value of boiling…

Q: Which of the following is TRUE? ..... OH X OH Y OH N None of the above. Compounds X and Y are…

A:

Q: that was 93% alcohol and 5% water was used instead of pure alcohol, how would the results be…

A: These  resulting Mixture will be  An Azeotropic Mixture .

Q: During chromatographic analysis of bromocamphor, two peaks were found on the chromatogram: camphor…

A: In this problem, from the chromatographic analysis of a sample of bromo camphor, we have to…

Q: what is the purpose of TLC Separation & Analysis of Analgesics?

A: A mixture is a type of matter which is composed of two or more substances. These are called…

Q: 1-methanol 2- ethanol 3- pentanol

A: HPLC determines the concentration of each component in terms of the intensity of peaks.

Q: If the solubility of a compound A in ether is 30g/100 ml, and the solubility of A in water is 15 g…

A: distribution ratio(ξ)=concentration of A in etherconcentration of A in water…

Q: What is an advantage of Gas Chromatography and Mass Spectrometry (GS/MS).   a. It is time…

A: Both a and b are disadvantages of Gas Chromatography and Mass Spectrometry (GS/MS) Option d is also…

Q: The following chromatogram was the output of the analysis of phytosterols in plants by gas…

A: The answer is as follows:

Q: 1. A vial containing an unknown sample is suspected to be one of the following compounds (mp.): urea…

A: A vial consists of an unknown organic compounds which can be urea, 2,4-dimethylacetanilide,…

Q: The melting point (mp) range of reference compound A is 320-340°C. The mp range of a 1:1 mixture of…

A: Given, Melting point range of compound A is ---- 320-340oC. Mixture of compound A and unknown…

Q: What does it mean if the color of the solution in UV flashlight are the following    Sample 1-…

A:

Q: In an experiment of Reverse Phase chromatography using C-18 stationary phase and a mixture of…

A:

Q: Given the following chromatogram of opiates found in urine, determine the separation resolution…

A: We have find out the correct option.

Q: 3. To determine ethanol content in beer using Gas Chromatography (GC) - Flame Ionization Detection…

A: GC-FID technique is a combination of gas chromatography(GC) and Flame Ionization Detection used to…

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…