Chemistry · May / June 2017 · Paper 12 · Question 6

Four samples are spotted onto chromatography paper. It is known that one of these samples is pure compound Q. A separate sample of pure compound Q is also spotted onto the paper. The paper is placed in a solvent. The diagram shows the chromatogram produced. Which statement is correct?

1. ASample 2 has travelled the furthest and sample 3 is pure compound Q.
2. BSample 3 has travelled the furthest and sample 2 is pure compound Q.
3. CSample 4 has travelled the furthest and sample 1 is pure compound Q.
4. DSample 4 has travelled the furthest and sample 2 is pure compound Q.

As printed in the paper