Question

In a paper chromatography experiment, a sample of a

pigment is separated into two components, X and Y, as
shown in the figure above. The surface of the paper is
moderately polar. What can be concluded about X and Y
based on the experimental results?
(A) X has a larger molar mass than Y does.
(B) Y has a larger molar mass than X does.
(C) X is more polar than Y.
(D) Y is more polar than X.

Answer 1

In a paper chromatography experiment, if component X travels a shorter distance than component Y, it suggests that X is more polar. If component Y travels a longer distance, it indicates that Y has a greater molar mass.

Step-by-step explanation:

In a paper chromatography experiment, a sample of a pigment is separated into two components, X and Y. The surface of the paper is moderately polar. Based on the experimental results, we can conclude that:

X is more polar than Y - Since X travels a shorter distance on the chromatography paper, it indicates that it has a stronger attraction to the polar surface. This suggests that X is more polar than Y.

Y has a larger molar mass than X does - Since Y travels a longer distance on the chromatography paper, it suggests that it is less polar and has a weaker attraction to the polar surface. Generally, the less polar component in a mixture tends to have a larger molar mass.