Question

how will you obtain blue dye from blue ink experimentally? how is the technique different from distallion ​

Answer 1

Answer:

Activity 1 : How can we obtain coloured compound (dye) from blue/black ink?  

• Fill half a beaker with water.
• Put a watch glass on the mouth of the beaker  
• Put few drops of ink on the watch glass.

• Now start heating the beaker. We do not want to heat the ink directly. You 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 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.