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
- Take a watch glass with some ink on it
- Now take a beaker with water
- Place the glass watch on the mouth of the beaker
- Start heating the beaker
- 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.