1. The problem statement, all variables and given/known data In detail, explain the theory behind the use of chromatography as a a.)separation technique. b.) identification technique. 2. Relevant equations 3. The attempt at a solution I know that chromatography can be used as a separation technique and also indetification technique. I'm just unsure when the question said in detail, explain the theory. But this was my answer. a. The theory behind chromatographys as a separation tehnique is to separate different types of organice compounds. It includes two phasses to separate the the compounds. The phases is the stationary phase which is the solid like alumina. The other phase is the moving phase which includes the solvents. When the mixture is passed through the stationary phase, different compounds will travel at different rate down the alumina. Sometimes more solvent is needed for different polarity of the compounds. Therefore, this technique can be used as a separating thenique. b. The theory behind the chromatogaphy can be used as a identification tehnique is that it can show what kind of compound is in the mixture by using a paper chromatography. The mixture is dotted on a special type of paper and then dipped into a solvent. The solvent will move up the paper and lines of colors will appear. The different types of colors are evidence as the different type of compounds included in the mixture. When compared the pigment of the lines can be identified. Therefore, this technique can be used to also identification tehnique.