A colourless mixture is separated using paper chromatography. The method is described in the steps below, but they are not arranged in the right sequence. 1 Take the chromatography paper out of the solvent when the solvent front is close to the top of the paper. 2 Put the chromatography paper into the solvent. 3 Spray the chromatography paper with a locating agent. 4 Put a spot of the mixture on the pencil line. 5 Draw a pencil line along the bottom of the chromatography paper. 6 Draw a pencil line to show the position of the solvent front. What is the correct sequence for these steps?
- A3 → 5 → 6 → 4 → 2 → 1
- B5 → 4 → 3 → 2 → 1 → 6
- C3 → 5 → 4 → 1 → 2 → 6
- D5 → 4 → 2 → 1 → 6 → 3