12 Thin layer chromatography (TLC) is used to analyse and identify unknown samples - OCR Gateway - GCSE Chemistry Combined Science - Question 12 - 2023 - Paper 9
Question 12
12 Thin layer chromatography (TLC) is used to analyse and identify unknown samples.
Fig. 12.1 shows the apparatus used for thin layer chromatography.
Identify the... show full transcript
Worked Solution & Example Answer:12 Thin layer chromatography (TLC) is used to analyse and identify unknown samples - OCR Gateway - GCSE Chemistry Combined Science - Question 12 - 2023 - Paper 9
Step 1
Identify the stationary phase and mobile phase shown in Fig. 12.1.
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Answer
Stationary phase: Silica gel on a TLC plate.
Mobile phase: Propanone.
Step 2
What determines how far the sample travels up the TLC plate?
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