In chromatography, which of the following statements is incorrect for Rf ?
Show Hint
- Rf value depends on the type of chromatography.
- Higher Rf value means higher adsorption.
- Rf value is dependent on the mobile phase.
- The value of Rf can not be more than one.
The Correct Option is B
Solution and Explanation
(1) Rf depends on the type of chromatography (stationary phase and technique): correct.
(2) A compound that is more strongly adsorbed on the stationary phase travels a shorter distance, so it has a LOWER Rf. The statement 'higher Rf means higher adsorption' is therefore incorrect.
(3) Rf depends on the mobile phase (solvent polarity): correct.
(4) The substance can never travel farther than the solvent front, so Rf ≤ 1: correct.
Answer: (2) Higher Rf value means higher adsorption.
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