Question

how can we obatin coloured coponenet (Dye) from blue /black ink​

Answer 1

To seperate colored component from blue/black ink follow the following steps :

Step 1 : Fill half a beaker with water.

Step 2 : Put a watch glass on the mouth of the beaker

Step 3 : Put few drops of ink on the watch glass.

Now we cann start heating the beaker. We do not want to heat the ink directly. We will see that evaporation is taking place from the watch glass.

Continue heating as the evaporation goes on and stop heating when you do not see any further change on the watch glass.

Observe carefully and record your observations.

We will find that ink is a mixture of a dye in water.

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

We can separate the volatile component (solvent) from its non-volatile solute by the method of evaporation.Explanation:To seperate colored component from blue/black ink follow the following steps :Step 1 : Fill half a beaker with water.Step 2 : Put a watch glass on the mouth of the beakerStep 3 : Put few drops of ink on the watch glass.Now we cann start heating the beaker. We do not want to heat the ink directly. We will see that evaporation is taking place from the watch glass.Continue heating as the evaporation goes on and stop heating when you do not see any further change on the watch glass.Observe carefully and record your observations.We will find that ink is a mixture of a dye in water. Thus, we can separate the volatile component (solvent) from its non-volatile solute by the method of evaporation.