Free Rf Value Calculator
Calculate the retention factor (Rf) in thin-layer chromatography from the distance traveled by the solute and solvent front.
Rf Value
0.500
Rf Value vs Distance Traveled by Solute
Retention Factor (Rf) in TLC
The Rf value describes how far a compound moves relative to the solvent front in thin-layer chromatography. It is characteristic of a compound under specific conditions.
Formula
Rf = distance traveled by solute / distance traveled by solvent front
Rf values range from 0 (compound stays at origin) to 1 (compound moves with solvent front). Polar compounds have lower Rf values on silica plates because they interact more strongly with the polar stationary phase.
Example Calculation
A spot on a TLC plate travels 3.5 cm while the solvent front reaches 7.0 cm.
- 01Rf = 3.5 / 7.0 = 0.500
Frequently Asked Questions
Learn More
Understanding Molarity
Learn what molarity is, how to calculate it, and why it matters in chemistry. Covers moles, liters, dilution, and step-by-step examples for preparing solutions.