TLC analysis of a mixture having 3 components (A, B, C) using silica gel as the stationary phase gave following Rf values; for A = 0.72, B = 0.48, C = 0.20.
Regarding the above observations, which one of the following statements is not correct for column chromatography of the mixture?
Solution
The $\mathrm{R}_{f}$ (retardation factor) value is the ratio of the Solute's distance travelled to the Solvent's distance travelled.
<br/><br/>
Polar molecules will attract more toward adsorbent and cover smaller distance from the baseline. A has maximum $\mathrm{R}_{f}$ so it will less adsorbed on the adsorbent surface and travel faster and will be eluded first.
<br/><br/>
$\mathrm{C}$ has minimum $\mathrm{R}_{f}$ value. So it is more strongly adsobred and less soluble in mobile phase.
About this question
Subject: Chemistry · Chapter: Surface Chemistry · Topic: Adsorption
This question is part of PrepWiser's free JEE Main question bank. 64 more solved questions on Surface Chemistry are available — start with the harder ones if your accuracy is >70%.