I need to design a method to separate a mixture of benzoic acid and caffeine based on the results of a solubility experiment I did and Im not sure where to start. Ok, I know that the caffeine acts as a base as it was soluble in HCL and the Benzoic acid is an acid as it was soluble in NaOH. So I have to do an acid base reaction to separate the mixture. So if I react the mixture with an acid such as HCL, it will react with the caffeine. Will that separate the mixture?

Question

I need to design a method to separate a mixture of benzoic acid and caffeine based on the results of a solubility experiment I did and Im not sure where to start. Ok, I know that the caffeine acts as a base as it was soluble in HCL and the Benzoic acid is an acid as it was soluble in NaOH.  So I have to do an acid base reaction to separate the mixture.  So if I react the mixture with an acid such as HCL, it will react with the caffeine.  Will that separate the mixture?