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

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 2 years ago

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