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Q.

Three organic compounds A, B and C were allowed to run in thin layer chromatography using hexane and gave the following result (see figure). The $R_{f}$ value of the most polar compound is __________ ${× 10}^{-2} cm$

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answer is 25.

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Detailed Solution

Most Polar compound moves slower on eluting with non-polar solvent. So polarity A < B < C

${(R_{t})}_{C} = \frac{distance travelled by C}{distance travelled by solvent front} = \frac{2}{8} = \frac{1}{4} = 0.25 = 25 \times 10^{- 2} = 25$

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Three organic compounds A, B and C were allowed to run in thin layer chromatography using hexane and gave the following result (see figure). The Rf value of the most polar compound is __________ × 10-2 cm