Question Detail

CHM 102 Isolation and Purification of Organic Compounds Objective Question
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Question

What is the formula for calculating Rf value in chromatography?
Options
A Rf = Distance solvent front / Distance substance
B Rf = Distance substance / Distance solvent front
Correct Answer
C Rf = (Distance substance) × (Distance solvent front)
D Rf = Distance substance - Distance solvent front
Correct Answer

Option B is the correct answer.

Detailed Explanation

Rf = (Migration distance of substance) / (Migration distance of solvent front). It is always between 0 and 1.

Hint

Substance distance over solvent distance.

Question Info

Course: CHM 102
Topic: Isolation and Purification of Organic Compounds
Type: Objective
Difficulty: Not specified
Question 507 of 1999
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