i did a project on pigments with salt water and alcohol i was just wondering why does some of the pigments settle in the alcohol layer and some of it settle in the salt water layer?
2006-07-03 04:35:00 · 4 answers · asked by Aroura 3 in Science & Mathematics ➔ Biology
It just matter of solubility, remember that water and alcohol have not the same polarity an thus the capacity to dissolve things.
Some pigments are water soluble and some are not, alcohol can be used as a solvent for some kind of compounds that water can not solve.
in addition salt gives extra properties to the water due the ions that it has, so extra electric forces attract or repel pigment molecules
2006-07-03 14:35:44 · answer #1 · answered by Carlos M 3 · 0⤊ 0⤋
It's probably the ingredients like in the pigments that cause it to attract to other things.
2006-07-03 11:38:47 · answer #2 · answered by Sohrab S 2 · 0⤊ 0⤋
You have to be a bit more clear and detailed.
Sounds like a solublity issue to me, but can't say much more without more details. (less polar dyes will dissolve better in alcohol than in salt water)
2006-07-03 11:42:43 · answer #3 · answered by bellerophon 6 · 0⤊ 0⤋
depends on the perrmeability of pigments
2006-07-03 11:38:30 · answer #4 · answered by joypinkmail 2 · 0⤊ 0⤋