[rajm95]

My lab will consist on:
Having solid sample(1g),that may  some organic compounds(shown below):

a)caffeine (1,3,7-Trimethylpurine-2,6-dione)
b) acetylsalicylic acid(aspirin)
c)benzoic acid
 
I'm trying to find the best set of solvents that will allow me to recrystallize each organic compound.
This is done because i want to know the presence/absence and quantity of the organic compounds of my problem sample.

Experiment i got planned:
1.-add a solvent that makes the 3 compounds soluble.
2.-Filter the solids(
the residual liquid will be used to make a Multi-solvent recrystallization, since each possible compound has a different Melting point we will be able to recrystallize each compound separately.



I got only one hour and a half to send my pre-lab
please chemical forums unite to find the best  set solvents

[billnotgatez]

@rajm95
I deleted your other 2 copies of this post per forum rules
Click on the link near the top center of the forum page.
Forum Rules: Read This Before Posting.
I left it in organic since your question is more on that topic area

[Arkcon]

This is a common beginner problem in organic chemistry, and I think you're going about it the wrong way.  What is the actual assignment?  You seem to have an organic acid, an organic base, and a neutral organic compound.  I have to guess, you've been assigned to separate them from each other?  Are there any hints in your text book or recent class notes?