Question Detail

CHM 102 Qualitative and Quantitative Analysis in Organic Chemistry Objective Question

Question

What is the formula for calculating Rf in chromatography?
Options
A Rf = distance moved by solvent / distance moved by compound
B Rf = distance moved by compound / distance moved by solvent front
Correct Answer
C Rf = (distance moved by compound) × (distance moved by solvent)
D Rf = distance moved by compound - distance moved by solvent
Correct Answer

Option B is the correct answer.

Detailed Explanation

Rf = distance traveled by the compound divided by distance traveled by the solvent front (0 < Rf < 1).

Hint

Compound distance over solvent distance.

Question Info