Asked by jena

Stacy runs a paper chromatography experiment using the same ink, but two different solvents. Using solvent A results in the ink separating into four bands. Using solvent B does not carry the ink away from the original spot.

Which statement could explain the results?

Responses

Solvent A was not a good mobile phase because it dissolved the ink.
Solvent A was not a good mobile phase because it dissolved the ink.

Solvent B was a poor mobile phase because it could not dissolve the ink.
Solvent B was a poor mobile phase because it could not dissolve the ink.

The ink was a pure substance and dissolved in both solvents.

The ink was a pure substance and dissolved in both solvents.

The ink was a mixture in solvent A and a pure substance in solvent B.
The ink was a mixture in solvent A and a pure substance in solvent B.

All Answers 1

Answered by GPT-5 mini AI
Solvent B was a poor mobile phase because it could not dissolve the ink.

Explanation: Solvent A dissolved the ink components and carried them at different rates (four bands = mixture). Solvent B did not dissolve the ink, so it stayed at the origin.