Question:

What is $R_f$ of B in the following reaction?


 

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For Thin Layer Chromatography (TLC), the value of \( R_f \) gives a measure of the distance travelled by a compound relative to the solvent front.
Updated On: Mar 15, 2025
  • \( \frac{1}{2} \)
  • \( \frac{2}{3} \)
  • \( \frac{3}{4} \)
  • \( \frac{4}{3} \)
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The Correct Option is B

Solution and Explanation

The $R_f$ value represents the ratio of the distance travelled by the substance to the distance travelled by the solvent front. In this case, the distance for $B$ is 8 cm and for the solvent front is 12 cm. Hence, \( R_f \) is calculated as: \[ R_f = \frac{{Distance travelled by B}}{{Distance travelled by Solvent front}} = \frac{8}{12} = \frac{2}{3} \] Thus, the correct value for \( R_f \) of B is \( \frac{2}{3} \).
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