Written by Robert Objective The purpose of this experiment was to analyze the purity of the benzoic acid, p-nitroaniline, and anthracene that were separated by pH-dependent extraction in the previous lab. Purity tests were done using Thin Layer Chromatogrphy (TLC) on a silica gel substrate. TLC is a technique used for separating a mixture of compounds. This is done by first dissolving the compound (assumed to be initially solid) in a solvent such as dichloromethane, and then using a Pasteur pipet […]
