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The Rf value for Compound A in water is 0.79. If the solvent front moves 5.2 cm, how far does Compound A travel? O 0.58 O 273 O 411 O 0.15

The Rf value for Compound A in water is 0.79. If the solvent front moves 5.2 cm, how far does Compound A travel? O 0.58 O 273 O 411 O 0.15

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Question:** The Rf value for Compound A in water is 0.79. If the solvent front moves 5.2 cm, how far does Compound A travel? **Options:** - ○ 0.58 - ○ 2.73 - ○ 4.11 - ○ 0.15 **Explanation:** The Rf (retention factor) is calculated using the formula: \[ \text{Rf} = \frac{\text{distance traveled by the compound}}{\text{distance traveled by the solvent front}} \] To find the distance traveled by Compound A: \[ \text{distance} = \text{Rf} \times \text{distance traveled by the solvent front} = 0.79 \times 5.2 \, \text{cm} = 4.108 \, \text{cm} \] The closest option is 4.11 cm. Thus, Compound A travels 4.11 cm.
Transcribed Image Text:**Question:** The Rf value for Compound A in water is 0.79. If the solvent front moves 5.2 cm, how far does Compound A travel? **Options:** - ○ 0.58 - ○ 2.73 - ○ 4.11 - ○ 0.15 **Explanation:** The Rf (retention factor) is calculated using the formula: \[ \text{Rf} = \frac{\text{distance traveled by the compound}}{\text{distance traveled by the solvent front}} \] To find the distance traveled by Compound A: \[ \text{distance} = \text{Rf} \times \text{distance traveled by the solvent front} = 0.79 \times 5.2 \, \text{cm} = 4.108 \, \text{cm} \] The closest option is 4.11 cm. Thus, Compound A travels 4.11 cm.
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