From Mock A · Paper 2: Organic and Physical Chemistry
9.22 marks
In TLC, a spot travelled 3.6 cm and the solvent 8.0 cm. Calculate Rf and explain how separation occurs.
From Mock A · Paper 2: Organic and Physical Chemistry
9.33 marks
Explain how gas chromatography can be used to identify the components of a mixture.
From Mock A · Paper 3: Practical skills, all content and multiple choice
341 mark
In column chromatography, which component elutes first?
From Mock B · Paper 2: Organic and Physical Chemistry
14.12 marks
In thin-layer chromatography, a spot moved 2.4 cm and the solvent front 6.0 cm. Calculate the Rf value.
From Mock B · Paper 2: Organic and Physical Chemistry
14.22 marks
Explain how gas chromatography separates the components of a mixture.
From Mock B · Paper 3: Practical skills, all content and multiple choice
5.12 marks
Explain why the baseline on a TLC plate is drawn in pencil and why it is above the solvent level.
From Mock B · Paper 3: Practical skills, all content and multiple choice
5.22 marks
Amino acids are colourless. Describe how their spots can be located.
From Mock B · Paper 3: Practical skills, all content and multiple choice
391 mark
In column chromatography, the component eluted first is the one that
From Mock C · Paper 2: Organic and Physical Chemistry
143 marks
Explain why amino acids in a mixture can be separated by thin-layer chromatography.
Score 0 / 18 · 0 of 9 marked
This paper is written by Plasmo in the style of the AQA A-Level Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.