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Chemistry · Oct / Nov 2018 · Paper 11 · Question 2

5070Chromatography

The results of a paper chromatography experiment are shown. X is an aqueous solution of a salt of a Group I element. Y is an aqueous solution of a salt of a transition element. Which row is correct?

  1. Alarger Rf value: X; requires a locating agent: X
  2. Blarger Rf value: X; requires a locating agent: Y
  3. Clarger Rf value: Y; requires a locating agent: X
  4. Dlarger Rf value: Y; requires a locating agent: Y

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Correct answer: C. larger Rf value: Y; requires a locating agent: X

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