[tiff8968]

A impure compound is soluble in water but insoluble in toluene. What can be concluded about the polarity of the compound? Would water and toluene be a good solvent pair?

Heres is my answer I want to know if they are correct.
I can conclude that the compound is a polar compound because its ability to dissolve in water. Yes, water and toluene would be a good solvent pair because water would be the good solvent and toluene would be the not so good solvent.

[Donphil07]

your compound cant soluble in benzen in temperature room, but i thinh it can soluble at high degree, so you can you only benzen for recrytalizing! good luck!!!!

[phil81]

It's not so simple. Toluene and water aren't fully miscible, so if you mix them you get two phases. This is not suitable for crystallization.

I'm assuming this is a theoretical question. What compounds are less polar than water but miscible with it?