Question

The litmus solution when shaken with charcoal becomes colorless. Explain

Answer 1

Litmus solution

1. Indicators are used to find the acidic or basic nature of any given solution.
2. Litmus solution is a natural indicator extracted from lichens plant. The solution has a purple color.

Adsorption

1. Adsorption is a surface phenomenon in which fine molecules of solute get accumulated on a material.
2. The material on which particles accumulate is called adsorbent and that accumulates is called as adsorbate.

Explanation

• Litmus solution has a purple color. When it is shaken with charcoal, molecules of dye get accumulated on the surface of the charcoal.
• Charcoal has a highly porous surface and it is a good adsorbent.
• Hence pores on charcoal hold molecules of the dye turning the litmus solution colorless.