Below are photos of Vis-a-Vis markers in 20% Acetone in Water and 80% Acetone in Water as the mobile phase. 20% Acetone in Water is more polar than 80% Acetone in Water.

1. What kind of change took place? Was it chemical or physical? How can you tell if the change was chemical or physical?
2. In the photos of the Vis-a-Vis markers, the Yellow dye in the Green, Black, and Orange were lower in the 20% Acetone and higher up in the 80% Acetone. Knowing that water is more polar than acetone, briefly explain what this indicates about the polarity of the Yellow dye.
3. The colors of the Vis-a-Vis markers are not made from a single dye, not even the primary colors of Red and Blue. Briefly comment on the Dye combinations used for each color.

Moble Phase =203 Acetrese in the Mobile Phoe =802 Acetane in te. GeEen BWR BLACF RED ORANER GRCEN BUE BLACK REO OAAUNS