Question Detail

CHM 102 Isolation and Purification of Organic Compounds Objective Question

Question

What does a high Rf value indicate in TLC?
Options
A The compound is very polar
B The compound has a high affinity for the mobile phase (nonpolar)
Correct Answer
C The compound has decomposed
D The compound is ionic
Correct Answer

Option B is the correct answer.

Detailed Explanation

A high Rf value means the compound traveled almost as far as the solvent front, indicating weak adsorption to the stationary phase and high solubility in the mobile phase (nonpolar character).

Hint

High Rf = likes mobile phase.

Question Info