Question

why do colors separate in paper chromatography

Answer 1

" ink is a mixture of serveral dyes and therefore we can separated those colour from one another using chromatography. when ink is exposed to certain solvents the colors dissolve and can be separated out. when we expose a piece of paper with inkOn It to a solvent, the ink spread across the paper when ink dissolves."

Answer 2

Think of chromatography as a race and you'll find it's much simpler than it sounds. Waiting on the starting line, you've got a mixture of chemicals in some unidentified liquid or gas, just like a load of runners all mixed up and bunched together. When a race starts, runners soon spread out because they have different abilities. In exactly the same way, chemicals in something like a moving liquid mixture spread out because they travel at different speeds over a stationary solid. The key thing to remember is that chromatography is a surface effect.