Method of Evaporation for separating dye ink from blue / black ink.

 

Is ink a single substance or a mixture?

It is a mixture of water and dye

Dye can be separated from water by evaporation.

Procedure to Obtain Dye from Ink by Evaporation

  1. Take a watch glass with some ink on it
  2. Now take a beaker with water
  3. Place the glass watch on the mouth of the beaker
  4. Start heating the beaker
  5. When the beaker gets heated, the ink in the watch glass on the beaker also gets heated.

We see that water in ink gets evaporated

However dye remain as residue on watch glass

 

By the above procedure, we can see that ink is a mixture of dye and water.

Thus, we can separate the volatile component / solvent (water) from its non-volatile component / solute (dye) by the method of evaporation.

  1. Class 9
  2. Chapter 2 Class 9 - Is Matter Around Us Pure

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo