A Practice Problem

It was suspected that a particular mixture contained three components: X, Y and Z. To check this, the mixture was analyzed by thin layer chromatography. In this experiment a nonpolar solvent was used with a polar stationary phase. The following results were obtained:

Answer the following questions and then check your answers.

1.	Which suspected components (X, Y or Z) are present in the sample?
2.	Are there other components in the sample?
3.	What is the Rf value of the unidentified component?
4.	Which of the suspected components is the most polar? the least polar?

Continue on and read about food dyes.

introduction

background

prelab

experiment

postlab