In organic chemistry lab chromatography, explain why the fluorence moved through the column in Part C...

In organic chemistry lab chromatography,

explain why the fluorence moved through the column in Part C first and fluorenone followed?

What would the result of using too much in a too tight plug for Part C?

Using a choice of hexane, dichloromethane or actone, indicate which solvent you would use to separate the following pairs of compounds.

a. Acetophenone and 2-phenylethanol

b. Bromobenzene and p-xylene

c. Saliclicacid and o-nitrobenzoic acid

Solutions

Expert Solution

I did not understand your first question.

Coming to the next question column purification depends on polarity as well as solubility.

a. To separate acetophenone and 2-phenylethanol we can choose hexane and dicholoromethane mixture. if you see the polarity of acetophenone and 2-phenyl ethanol, there is difference. acetophenone is nonpolar it can elute in hexane itself and 2-phenylethanol is little polar hence you should mix polar solvent with non-polar hexane.

b. both are non-polar hence hexane is the preferrable solvent for their separation

c. salicylic acid and o-nitrobenzoic acid both are highly polar hence you have to you mixture of dicholormethane and acetone

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

Organic chemistry Gas chromatography lab questions : 1. Briefly explain the various parts of a GC...

Organic chemistry Gas chromatography lab questions : 1. Briefly explain the various parts of a GC - Injection port, oven, copper coil, and detector. 2. Identify the stationary phase and the mobile phase. 3. What is the problem with setting the oven temperature too high when programming the parameters? What is the problem with setting it too low? Thank you.

1. Why might you use a separatory funnel in an Organic Chemistry lab? What is the...

1. Why might you use a separatory funnel in an Organic Chemistry lab? What is the appropriate way to use one? 2. In an acid-base reaction, what major mechanism is being carried out?

This is Organic Chemistry Lab, Solvent Extraction. 1. What are the criteria for solubility of organic...

This is Organic Chemistry Lab, Solvent Extraction. 1. What are the criteria for solubility of organic molecules in water? 2. If methylene chloride was used as the organic solvent in solvent extraction, instead of ether, what would the top layer be in the separation step? 3. What formula was used to calculate interaction of organic compounds with the stationary phase? 4. In the given mixture (liquid-liquid), which compound (be specific) has the weakest interaction with the stationary phase? Why?

When compounds move through a column (in a column chromatography experiment), an ideal scenario involves the...

When compounds move through a column (in a column chromatography experiment), an ideal scenario involves the compounds separating into distinct (tight) bands, and traveling at different speeds through the column. This doesn’t always happen, though, for a variety of reasons. Is it possible for the stationary phase particles (silica or alumina particles in our case) to be too large? If so, what impact would these too-largeparticles have on the separation? Briefly explain your answer

Explain and compare thin layer chromatography with column chromatography (in-detailed answer)

Column Chromatography Lab 1. What would happen if diethyl ether were put in the column first...

Column Chromatography Lab 1. What would happen if diethyl ether were put in the column first instead of petroleum ether? 2. The recrystallization lab required you to purify naphthalene which contained a small portion of fluorenone. Could you use column chromatography to purify the same mixture? Would the selection of solvents be different from those used in this lab?

Hi, I have some Organic Chemistry lab questions that I'm stuck on. Please explain in complete...

Hi, I have some Organic Chemistry lab questions that I'm stuck on. Please explain in complete sentences Thanks in advance 1. Describe the likely cuase and a reasonable solution for each problem encountered: A. After spotting and developing a TLC plate, no spots are observed. B. After spotting and developing a TLC plate, all spots moved along with the solvent front. C. After spotting and develping a TLC plate, all spots are observed at the starting line. 2. What conclusion...

In a Column Chromatography of spinach extract experiment a post lab question is as follows: Compare...

In a Column Chromatography of spinach extract experiment a post lab question is as follows: Compare the order of elution from the column with the Rf of the observed compounds. Is there a correlation? If yes, what is it?

explanation of column chromatography. Why do the compounds separate?

Thin layer chromatography in the organic chemistry typically uses a glass plate coated with silica gel,...

Thin layer chromatography in the organic chemistry typically uses a glass plate coated with silica gel, which serves as the stationary phase. The mobile phase in the experiment is an organic solvent or mixture of organic solvents. The mobile phase pulls the organic material(s) being analyzed up the plate by dissolving them in the solution. So, the more something dissolves in the mobile phase the further up the plate it moves. The mobile phase in this experiment will involve which...

Subjects