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|Part A. |
Part B (not shown in video). Six different glasses are obtained.
Part A: The second and fourth glasses turned red. When the contents are poured back into the pitcher the solution turns colorless. The contents in the milk bottle turn a milky white.
Part B: Each of the glasses turns a different color: red, white, blue, black, green, and amber.
Part A: The "water" is made up of water, phenolphthalein, and a small amount of dilute acid. (Phenolphthalein changes from colorless to red in the presence of a strong base.) Before the pouring the "water," the first glass contained H2SO4. The second and fourth glasses contained NaOH. The third and fifth glasses contained water. The milk jug contained a saturated solution of SbCl3 in HCl.
Part B: The "water" is made up of water and ferric ammonium sulfate. The glasses contained KSCN, BaCl2, K4Fe(CN)6, tannic acid, tartaric acid, NaHSO3.
This material is based upon work supported by the National Science Foundation under Grant Number 1246120