The mobile phase taken in the TLC jar can be one of the following a mixture of two inert gases a mixture of a solid and a liquid a mixture of gas and solvent a solvent or mixture of solvents

Q: Main advantages of capillary gas chromatography compared to open tubular column gas chromatography

A: Gas chromatography is an analytical technique used for the separation of chemical components of a…

Q: 5. In preparation for the analyses of other types of samples that may reach your laboratory, the…

A: There are many extraction method for cannabinoids like solventless extraction ,rosin extraction etc.…

Q: Student A did not see any spots on her TLC plate after visualization under iodine vapor. Which of…

A: The solution is given below -

Q: Explain  what is the van Deemter equation: Assumptions, limits, and adjustment to modern high…

A: van Deemter equation is the equation which shows the relationship between plate height and mobile…

Q: Which properties would be ideal in selecting the compound to be used as a primary standard for…

A: In quantitative volumetric analysis, hygroscopic, expensive, some purity, solid and stable are the…

Q: 7. Would it work to take the melting point by using the same capillary tube for both trials? Solid…

A: This is because melting of a pure solid occurs at a constant temperature called melting point while…

Q: The eluant in column chromatography is typically referred to as: 1) the stationary phase 2) the…

A: Chromatography is a technique in which we separate a single chemical compound from a mixture. If the…

Q: Choose from the following gases which are unsuitable for use as a GC carrier gas? A. Helium B.…

A: Given that : We have to choose the correct options from the following :

Q: Is TLC chromatography and paper chromatography in a normal phase chromatography or reverse phase…

A: Solution- TLC- Thin layer chromatography. Paper chromatography

Q: In a reversed phase liquid chromatography separation, what trend in k’ (capacity factor), α…

A:

Q: In ion-exclusion chromatography, ions are separated from nonelectrolytes (uncharged molecules) by an…

A:

Q: The distribution coefficient for Z between n-hexane and water is 5.85. Calculate the percent of Z…

A:

Q: Sketch a flow chart of the entire caffeine extraction and purification used in the laboratory…

A: To prepare a flow chart for the extraction of caffeine and purification used in the laboratory.  The…

Q: Why is it important to use volatile solvent with an ESI source?

A: Volatile solvents are liquids that vaporize at room temperature. These organic solvents can be…

Q: After the liquid-liquid extraction of caffeine, you are removing the dichloromethane solvent on the…

A: The rotary evaporator may be described as the physical efficient technique that is used to convert…

Q: Choose the correct option. Which one of following techniques is used as fractionation as well as…

A: Molecular weight is the mass of one mole of substance. Units of molecular weight is grams per mole.…

Q: Enumerate at least two important things to do to maximize yield when using vacuum filtration in the…

A: Aspirin is produced chemical synthesis from salicylic acid, through acetylation with acetic…

Q: 1. Shown below, a student spotted the three-component mixture onto a TLC plate and developed it…

A: a) Depending on the polarity the analytes will be separated on the TLC plate. More the polar…

Q: During the chromatography the solvent may be changed from hexanes/ ethyl acetate (8:2) to hexanes/…

A: Given: Solvent system 1:   Hexane/Ethyl acetate (8:2)Solvent system 2:   Hexane/Ethyl acetate (4:6)…

Q: What are the advantages of Ultra-Performance Liquid Chromatography over High-performance liquid…

A: Both ultra performance liquid chromatography and high-performance liquid chromatography are good…

Q: How will the following changes affect the retention time of the solute in supercritical fluid…

A: Supercritical fluid chromatography (SFC) is an analytic techniques used for separation similar to…

Q: Which properties would be ideal in selecting the compound to be used as a primary standard for…

A: A primary standard solution of a compound is used for the standardization of a solution of another…

Q: containing 2 polar components and 1 nonpolar component. The student is asked to separate the…

A:

Q: Write the advantages and disadvantages of Liquid chromatography compared with Gas chromatography.

A: Liquid chromatography (LC) and gas chromatography (GC) are analytical techniques for separating…

Q: Suggest a reason why the optimum linear flow rate is much higher in gas chromatography than in…

A: Given:-             The optimum linear flow rate is much higher in gas chromatography than in liquid…

Q: 1. Shown below, a student spotted the three-component mixture onto a TLC plate and developed it…

A: To determine the order in which the given molecules present in the analytical mixture will appear on…

Q: v- BTEXS are a class of volatile organic compounds that should be monitored and measured regularly…

A:

Q: what are key reactions involved in seperation of liquid mixtures by simple and fractional…

A: Introduction: Chromatography and distillation is a technique used to separate the mixture of…

Q: Shown below, Baker spotted the three-component mixture onto a TLC plate and developed it using the…

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

Q: State the major differences along liquid, gas, and super critical fluid chromatography?

A: A supercritical fluid is the phase of a material at critical temperature and critical pressure of…

Q: C- CH3 C-OH A В

A: Ethyl acetate is highly polar compound solvent. As ethyl acetate contains two polar bonds(CO and CO)…

Q: Jamar spotted the three (3) component mixture shown below to a TLC plate and developed it using the…

A:

Q: Indicate the order of elution in which the following compounds would be eluted from an HPLC column…

A: Concept: In reversed phase packing HPLC more polar compound will elute first. So we have to know the…

Q: What is the advantages, disadvantages and improvements of the Ultra high pressure liquid…

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

Q: For thin layer chromatography, why should a piece of filter paper that is moistened with the…

A: Purpose of the Filter Paper in the Thin-Layer Chromatography :- Filter paper is placed in the…

Q: Which of the following cannot be used as adsorbent in column chromatography?   a.   Silica gel…

A:

Q: which of the four binary mobile phase compositions (mixing ratio 1: 1) shown below will have the…

A: The polar and non-polar compounds are: Non-polar - Pentane, toluene. Polar - Methanol, acetone,…

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: Identify the effect of the condition on the parameters. Write increase, decrease, or no effect. And…

A: A) The test tube used in the determination of the ΔHrxn for nitric acid was still wet with water. […

Q: 5. Column Chromatography works by the same principle as TLC however the silica gel is not plated on…

A: To answer question 5.

Q: The amount of ethylene resulting from the thermal solution of butane is twice the amount resulting…

A: Two questions based on general chemistry that are to be accomplished.

Q: True or False? In column chromatography the solvent moves up and through the adsorbent by capillary…

A: Answer :-  8) False  9) y-adaptor and condenser…

Q: Student A did not see any spots on her TLC plate after visualization under iodine vapor. Which of…

A: Thin layer chromatography

Q: best choice of mobile phase in a thin layer chromatography experiments is:  Group of answer choices…

A: The correct option are as follows:

Q: An open tubular column with a diameter of 215 µm and a stationary phase thickness on the inner wall…

A: Given:-              diameter of open tubular column = 215 μm                      Unretained solute…

Q: Extraction of the aqueous salicylic acid solutions with 10% ethyl acetate/hexane (density ~ 0.7…

A: As you have posted two independent questions in a single request, we will solve the first question…

Q: One of the main differences between TLC and column chromatography is the direction in which the…

A: Purification is one of the key step in the isolation of organic or inorganic compounds. Different…

Q: Why ebuilliometer is having a great effect on measuring ethanol Yield than gas chromatography

A: Ebulliometry is based on the principle that the boiling point of wine is depressed in comparison to…

Q: set-up, e volatile acetc е аcet

A: Given data set: Mass of the empty flask = 351.44 g Mass of the heated flask = 355.02 g Thus, Mass of…

Q: The mobile phase taken in the TLC jar can be one of the following O a solvent or mixture of solvents…

A: Note : According to our guidelines we are supposed to answer only one question. Kindly repost other…

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