Based on the result in this
experiment, the mobile phase rose up on the TLC plate then dragged the ink from
the marked dot up along the TLC plate, which is the light pink pigment whose Rf
was 0.98 had the greatest affinity to the mobile phase. Moreover, the pigment
that was closer to the marked dot was more attracted to the stationary phase,
which is the dark pink spot that had an Rf of 0.72 and had a greater affinity to the
stationary phase.
