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A student performs this and records the following data from the complted chromatogram.the solvent has moved 7.30 cmComponent A produces a blue spot that has moved 5.80 cm.Component B produces a pink spot that has moved 2.45 cm.Component C produces a tan spot that has moved 4.10cm.Calculate the Rf values for component.

Question

A student performs this and records the following data from the complted chromatogram.

  • the solvent has moved 7.30 cm
  • Component A produces a blue spot that has moved 5.80 cm.
  • Component B produces a pink spot that has moved 2.45 cm.
  • Component C produces a tan spot that has moved 4.10cm.

Calculate the Rvalues for component.

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Step 1

The  Rf value is the ratio of distance travelled by the sample (b) to the distance travelled by the solvent (c). It is given in equation (1).

b
(1)
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b (1)

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Step 2

Use the equation (1) and substitute 5.80 for b and 7.30 for c for component A as shown below.

5.80
7.30
0.79
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5.80 7.30 0.79

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Step 3

Use the equation (1) and substitute 2.45 for b and...

2.45
7.30
0.34
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2.45 7.30 0.34

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