
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question
A student is asked to determine the chemical make-up of four different inks. She places four starting points made out of each ink sample on a sheet of chromatography paper and numbers the samples with a pencil as 1, 2, 3 and 4. She places the paper into a solution of chromatography solvent, allowing only the point to be submerged in the solvent. After about twenty minutes, she marks the end of the advancement of the mobile phase. Her chromatography paper is shown at the right. Which statement is correct based on the data?

Transcribed Image Text:Maximum Advance
of Mobile Phase
OOOO
Starting Line
A) Sample 1 appears to be a homogeneous sample containing the ink most soluble with the chromatography solvent.
Sample 4 appears to be composed of three separate dyes in the ink and the dyes marked "F" and “G” have similar solubility
with the chromatography solvent
B
Sample 2 appears to be a homogeneous sample.
Sample 3 appears to be composed of two separate dyes in the ink and they have very different solubility with the
chromatography solvent.
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