Hello, I have to perform a qualitative analysis on an unkown salt for lab as a test. The problem is that one of the test viles will have two salts mixed together. I want to be clever and find a way to separate them due to their differing density and then test each one indivdually. The problem is that they are all soluable, so the intial thought I had about separating them in a liquid that they are both not soluable in would not work. Too many unknown salts to choose a viable liquid for separation, some might dissolve. Any suggestions on separation? or am i going to have to test both of them mixed together. Do you think I could centrifuge the two salt + water mixture to separate them out by density? If they are nearly equal, this might now work though. I might give it a shot though. Oh whoops, they will both be clear liquids, I dont see how this will help either.