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Methods of separating and purifying substances

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Question 32

During a thin-layer chromatography (TLC) analysis of a wild berry extract, the solvent front advanced a distance of 14.6 cm from the baseline. A specific anthocyanin pigment in the extract has a recorded Rf R_f\,Rf​ value of 0.43 in this solvent system.

Calculate the distance from the baseline to the centre of this pigment spot. Give your answer to two significant figures.

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Methods of separating and purifying substances Questions

  1. GCSE
  2. /Chemistry
  3. /Methods of separating and purifying substances