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2007-11-16 00:58:38 · 5 answers · asked by bagtack 2 in Science & Mathematics ➔ Chemistry
Violet: solid, vapour, nonpolar solvents
Brown: some polar solvents.
Iodine is often dissolved along with potassium iodide in water. The solution is brown, and the iodine is actually bonded to the iodide, to make the I3 - anion.
2007-11-16 01:04:26 · answer #1 · answered by Facts Matter 7 · 1⤊ 0⤋
Iodine = Violet
Iodide = Brown
2007-11-16 09:16:36 · answer #2 · answered by Bananaman 5 · 0⤊ 1⤋
Paul B is right.
It is purple in its pure form. In an aqueous solution is when it turns brown.
Much like copper is bronze when its solid, but is blue when in solution.
The other guy is also kind of right, it reacts with starch to turn a dark, dark blue (but not purple)
2007-11-16 09:35:10 · answer #3 · answered by H T 3 · 0⤊ 0⤋
Iodine Solutions in chloroform, carbon tetrachloride, and carbon disulfide are violet.Aqueous and ethanol solutions are brown.
2007-11-16 09:05:08 · answer #4 · answered by Prabhakar 2 · 0⤊ 1⤋
It remains brown when there is no starch and it turns blue-black when there is starch.
2007-11-16 09:17:40 · answer #5 · answered by Jane 1 · 0⤊ 1⤋