Question

2. In the separation of dyes A and B by chromatography, component B has more
solubility in the solvent. Which component will rise faster?
(a) A
(c) B
(b) Both at the same speed (d) Separation of dyes is independent of the
solubility in solvent.

Answer 1

Answer:

Principle of chromatography: The coloured component that is more soluble in water, rises faster and in this way the colours get separated. Applications: (a) To separate colours in a dye. (b) To separate pigments from natural colours.

Answer 2

Answer:

The correct answer is dye B.

Explanation:

• The two compounds are dissolved in the same solvent according to the chromatography principle, but their solubilities may differ.

• The chromatography principle states that colours are separated by how quickly the more water-soluble coloured component rises to the surface.

• The more soluble colour rises faster and separates because the ink is a blend of two or more colours.