Paper+Chromatography

Kimia P   Cary Academy ** ABSTRACT  ** The purpose of this experiment is to see which dye in food coloring is the most soluble. It is hypothesized that the blue dye will have the highest Rf value; therefore, it will be the most soluble. This is hypothesized because blue is a primary color, hence it does not have any other colors that need to be separated. Then when the distance the dye traveled is divided by the distance the solvent traveled, the answer will be higher, indicating that it has a greater Rf value, therefore it is recognized that it has a higher solubility level. This experiment may be conducted by applying drops of the three different mixtures Then it is tapped to a piece of string that is attached the sides of the bucket. The solvent is then poured in the bucket slowly. The distance the center of the dye travelled was divided by the distance the solvent travelled. As a result, the blue dye that was part of purple is the most soluble. It was also found that, the pink dye that was also part of purple is the least soluble, because its Rf value is the lowest. It was found that the plain blue dye had an Rf value of 0.55185185 cm. The pink dye that was part of the purple dye had an Rf value of 0.26111 cm.
 * PAPER CHROMATOGRAPHY: MEASURING THE Rf VALUE OF DYES IN DIFFERENT SOLVENTS **