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Purity and separating mixtures

Purity and separating mixtures

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Question 10

A student performs a paper chromatography experiment to analyze a food coloring. After developing the chromatogram, the student measures the following distances from the baseline:

  • Distance travelled by the food coloring spot: 4.5 cm
  • Distance travelled by the solvent front: 7.5 cm

What is the Rf R_f\,Rf​ value of the food coloring?

A

0.60

B

1.67

C

3.00

D

0.40

Markscheme

Purity and separating mixtures Questions

  1. GCSE
  2. /Chemistry
  3. /Purity and separating mixtures

46 exam-style questions on OCR GCSE Chemistry Purity and separating mixtures. Each one has a worked solution and a mark scheme showing where the marks go.

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