Where The Color Goes?
There are n number of washing powders are available in market and all are of different colors but when the powder added(mixed or disolved) to the water the solution always looks colourless . Now tell me where the powder color gone? and why it is not happen with regular color ( used for painting etc..) added with water.
Answer:
This is a little like asking where the white goes when snow melts.
Color in powders is not necessarily a property that appears in solution. In crystals color is intensified by light bouncing off all the internal surfaces. In solution, light has no surface to bounce off so whatever color there is may be too dilute for you to see.
Paint is a different story - it's color does not come from refraction.
In dyes, the color is so intense to begin with that diluting it with water just makes the intensity a bit less.
Color comes from the spectrum of reflected colors of the compound that is included in the powder. When water is added, the compound changes, as it is dissolved, and is no longer the same chemically, and therefore does not reflect the colors it did in the solid state.
i knw d ans but i cant explain it in d language of chemistry as i studied it a long time ago but ya i can explain it in simple words actually wat happens is wen washing powder is dissolved it gets chemically bounded with the water particles (h2o)due to its lyophilic nature n therefore it forms a sol which is (solid in liquid) n thus it leaves its original colour n becomes colourless.. but with the painting colours it not d case they act with water in diff. way so their colour does'nt vanishes away..i hope u got it..??? hah anyways i tried it..tc
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