Explain an activity to show the
separation of dyes in black ink using
chromatography.
a. what do you observe on the filter
paper as the water rises on it.?
b.Do you obtain different colours on
the filter paper strip?
c. What is the reason for the rise of
the coloured spot on the paper
strip?
d.write its applications.
Answers
Answer:
Method:
1.Take a thin strip of filter paper.
2.Draw a line on it using a pencil approx. 3 cm above the lower edge.
3.Put a small drop of ink with help of a pen at centre of line and let it dry.
4.Lower the filter paper into a glass jar containing water in such a way that the ink's drop remains just above the water level. Leave it undisturbed.
5.Water rises up in the filter paper. Ink drop splits up into its constituents.
Conclusion:Dye in black ink is a mixture of 2 or 3 colours. The coloured component that is more soluble in water rises faster and in this way the colours get separated.
Explanation:
Answer:
When the water passes through the black ink it takes the pigment colors with it. Some pigments dissolve in water easier and are pulled with the water farther up the paper. This is called chromatography - separating the parts of a mixture so that you can see them one at a time
Explanation:
a -different colours are started showing
b- yes
c- in the process of chromatography the coloured spot rises on the paper strip as it is soluble in water and thus due to their solubility the spot rises up
d-Chromatography has various applications. It is used for the separation of different colors of ink. It is also used to identify and separate the preservatives and additives added in the food items. It is also used in DNA fingerprinting and bioinformatics.
I hope it's help you