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Chromatography

Reena drops a...

Question

Reena drops a filter paper with different ink marking into a beaker containing water as shown in the figure. Which of the following can be observed and inferred after some time?

A

After some time the spots level arises

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B

All the ink spots move up at the same speed

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C

All the ink spots attains the same height

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D

All the ink spots move up at different speeds

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Solution

The correct options are
A After some time the spots level arises
D All the ink spots move up at different speeds
Chromatography is the technique used for the separation of those solutes that dissolve in the same solvent. In this technique, the difference in rate of movement of the solute particles is used to separate them.
The solution is made to move through an adsorbent solid. The component that is more soluble in the solvent, dissolves faster and moves faster in the medium.

In the figure, all the ink spots are of different colours. The solubility of each colour is different in the solvent. Thus, each colour moves up at a different speed and attains a different height.

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Similar questions

Q. Why different spots are formed on paper during separation of dyes from ink?

Q. Tony wanted to separate the mixture of dyes constituting a sample of ink in his chemistry laboratory. He marked a line by the ink on a filter paper and placed the filter paper in a glass containing water as shown in the figure. The filter paper was removed when the water moved near the top of the filter paper.
What would you expect to see on the strip, if the ink contains three different coloured components?

Q. The diagram below represents a chromatography experiment.
Chromatography is a word that means "color writing." It is a technique that can be used to separate the components of a mixture.
In this experiment, a marker was used to make a dot of a green ink on a piece of paper. The bottom edge of the paper was placed in water, and the water travelled vertically up the paper. As a result, the spot of green ink was separated into two colors: blue and yellow.
Which of the following is the BEST explanation for the fact that the blue ink moved farther up the paper than the yellow ink in this experiment?

Q. A child wanted to separate the mixture of dyes constituting a sample of ink. He marked a line by the ink on the filter paper and placed the filter paper in a glass containing water as shown in the figure. The filter paper was removed when the water moved near the top of the filter paper.
(a) What would you expect to see, if the ink contains three different coloured components?
(b) Name the technique used by the child.
(c) Suggest one more application of this technique.

Q. Question 36
A child wanted to separate the mixture of dyes constituting a sample of ink. He marked a line by the ink on the filter paper and placed the filter paper in a glass containing water as shown in the figure. The filter paper was removed when the water moved near the top of the filter paper.
(a) What would you expect to see, if the ink contains three different coloured components?
(b) Name the technique used by the child.
(c) Suggest one more application of this technique.

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