(a)[1]
Name the process that the student uses to separate the mixture of dyes.
(b)[1]
The apparatus shown in the diagram is arranged incorrectly. Explain why.
(c)[1]
Which of the dyes A, B, C and D are found in the mixture of dyes?
(d(i))[1]
Measure the distance from: - the baseline to the solvent front ................. cm - the baseline to the position of A ................. cm.
(d(ii))[1]
Calculate the $R_f$ value for A.