A student used paper chromatography to separate the dyes in a particular ink.
Describe how paper chromatography is carried out. You may draw a diagram to help explain your answer.
In your description include
● the apparatus you would use,
● how chromatography is carried out.
Any four of: [4]
liquid in beaker / other suitable container with chromatography paper dipping
into the liquid
solvent labelled or named as word solvent or as specific named solvent
(must be in correct context, e.g. in beaker)
REJECT: solution of substance to be chromatographed
spot placed on paper above solvent level
allow solvent to run up the paper / solvent carries the dyes up the paper
the spots separate / different dyes go different distances
IGNORE: the dyes separate (in stem of question)
compare distance spot moves to a standard
ALLOW: more advanced points, e.g. mark solvent front / compare Rf values
ALLOW: marks from labelled diagram