My guess: The green dye contains one very hydrophilic yellow color and one more hydrophobic blue color. Isopropanol and water form a homogenous phase, until you dissolve K2CO3 in the water. The polarity of the solution increases and it can hold less isopropanol, which then forms a second phase. The dyes then separate, since one stays in the water phase and the other one goes to the isopropanol phase.
Here we have two physical processes: First is salting out the iPrOH, resulting in a denser aqueous salt solution on the bottom and the separeted alcohol on top. Secondly the green food color is a mixture of a yellow and a blue dye: the blue one is better soluble in organic solvents, the yellow one in water or aqueous solutions.
Fun fact; this technique is used in organic chemistry to help separate and isolate different compounds. For example, by using a highly concentrated water and salt solution (“brine”) it can help keep the water layer and organic layer separate during a reaction purification, allowing one to easily extract different compounds into the different solvents and keep the two liquid layers from mixing.
i use a similar process to purify isopropyl alcohol to close to 98% since i need high concentrations to clean electronic parts and is easier just to go buy 50% and add some Pure Salt into it and the water and alcohol will seperate
Permanemts that you play before the lock that can then be activated after to clean up the board might be good in this deck. Ratchet bomb type effects. Or things that just destory targeted permements like sinister concotion or blood tithe harvester
Light is generated by the oscillation of charged particles. When “white” light travels through a medium, the valence electrons begin oscillating with a particular frequency related to the energy required to cause that oscillation. When those electrons oscillate, they do so with the particular frequency they are tuned to. This is what makes the sky blue. In metals, the valence electrons form a “sea” of electrons in the conduction band. These elections oscillate easier in the plane parallel to the surface of the metal than they do in the plane perpendicular to the surface of the metal. This is what gives a metal it’s reflective properties and why those lightwaves are polarized in the direction parallel to the surface of the metal. So when a chemical reaction occurs, the valence electrons of the new substance has a different energy band than the original reactants.
@guodlca Well, the Sun looks more yellow on Earth than white in space because of the direct red light, but the blue is scattered more in the upper atmosphere which causes more of it to reach your eyes at a time. This scattering is from entire molecules (O2 and N2) in the upper atmosphere absorbing and re-transmitting blue light. The coloring from the reactants and products of a chemical reaction could be from molecules oscillating or the valence electrons changing orbits. I guess it would depend on the particular reaction in question.
Carbonate ions hydrolyze with water to form OH- ions and turn the water basic. The change in pH changes solubility of isopropanol and water and the two colors of food dye separate based on their solubilities in water vs isopropanol.
That’s really cool! If I was to recreate the experiment, where could I find potassium carbonate? Is it in any household products or would I have to order from a supplier? I read your comment about how it might work with sodium carbonate, which I have, and I’ll try that if I can’t get the potassium carbonate.
The green dye is actually a blue dye mixed with a yellow dye. One dissolves in water, the other in alcohol. However, the relative density of the two resulting solutions cause them to separate.
My guess was there was two different liquids mixed together and the solid was only soluble in one of them so they separated out once one became more dense than the other. But I don’t know how the dye also separate evenly like that. I originally thought you had a blue liquid and a yellow liquid that mixed together made green and separated out to make the yellow and blue. But that isn’t it since you showed us after that it had green dye.
I've not been able to get good blue/yellow separation with sodium carbonate, but others have claimed they can. If you try it with sodium carbonate let me know how it goes
