Question

When should chromatography be used to separate a mixture as opposed to recrytallization, distillation, or extraction?

When should chromatography be used to separate a mixture as opposed to recrytallization, distillation, or extraction?

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Recrystallization technique can be used for separation of compounds if one has a greater solubility than the others irrespective of polarity. Distillation can be used if one compound has a lower boiling point than the other one. However, this technique can be used mostly liquid mixtures with the boiling point of one compound is below 150 0C irrespective of polarity difference. Extraction techniques can be used by considering the solubility of the mixture if one is soluble in aqueous medium and the other one is soluble in an organic medium.

The chromatographic technique can be used based on the principle of difference in Rf values of the mixtures. In other words, if compounds have sufficient polarity difference they can be separated by column chromatography or preparative thin layer chromatography.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Why extraction is preferred to distillation? And What are the situations where extraction can be used...
Why extraction is preferred to distillation? And What are the situations where extraction can be used instead of distillation?
4. Simple distillation gave us a mixture of products, especially in the case of 2- methylcyclohexanol....
4. Simple distillation gave us a mixture of products, especially in the case of 2- methylcyclohexanol. Below is a list of purification methods. Explain if the method could be used to separate the products. If the technique cannot be used to separate the products, briefly explain why. a. Fractional Distillation b. Column Chromatography c. Recrystallization d. Extractions
Which type of distillation should be used to distill a mixture of 2-butanone and t-butyl alcohol,...
Which type of distillation should be used to distill a mixture of 2-butanone and t-butyl alcohol, and why? Which type of distillation should be used to distill diethylene glycol, and why? Which type of distillation should be used to distill a mixture of diethyl ether and chlorobenzene, and why?
I have run Gas Chromatography, NMR spectroscopy, or Distillation to identify the unknown compoments of mixture...
I have run Gas Chromatography, NMR spectroscopy, or Distillation to identify the unknown compoments of mixture and % composition of mixture. But the data contradict to each other and so what could be the reasons for the discrepancy?
You will use a simple distillation to isolate the product mixture in the dehydration reaction. Then...
You will use a simple distillation to isolate the product mixture in the dehydration reaction. Then you will separate the water from the alkene products by extraction using ether as your extraction solvent, dry the ether, and evaporate the ether to prepare your alkene mixture for analysis. Would it be useful at this point to do a second simple distillation to try to isolate each of the alkene products before analysis so that you can analyze each product separately rather...
In preparation for your distillation, you performed an extraction on your oil/vinegar salad dressing mixture. Why...
In preparation for your distillation, you performed an extraction on your oil/vinegar salad dressing mixture. Why does cooking oil dissolve in ethyl acetate, but not water?
A distillation column is used to separate 930 kg /h of a mixture containing 40 wt%...
A distillation column is used to separate 930 kg /h of a mixture containing 40 wt% Butanol (C4 H10 O) in Pentanol (C5 H12 O), to give top product of 70% mole Butanol and 60% mole Pentanol waste (at bottom). 1. Calculate the mole flow rate, mole fraction and mole percentage of each stream in the (F, D & W) around the column? All results should be tabulated in the Table below. 2. Calculate the heat removed by condenser? Given...
A distillation column is used to separate 280 kg /h of a mixture containing 30 wt%...
A distillation column is used to separate 280 kg /h of a mixture containing 30 wt% Propanol (C3 H8 O) in Octanol (C8 H14 O), to give top product of 83% mole Propanol and 67% mole Octanol waste (at bottom). 1. Calculate the mole flow rate, mole fraction and mole percentage of each stream in the (F, D & W) around the column? All results should be tabulated in the Table below. 2. Calculate the heat removed by condenser? Given...
How would you separate a mixture of m-toluic acid and 3-aminoacetophenone using extraction technique?
How would you separate a mixture of m-toluic acid and 3-aminoacetophenone using extraction technique?
How would you separate a mixture of benzhydrol, benzophenone, and biphenyl using column chromatography (i.e. which...
How would you separate a mixture of benzhydrol, benzophenone, and biphenyl using column chromatography (i.e. which is the best eluent or mixture of eluent, order of addition of the eluents, order of elution, ect.)?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT