I have to compare modern methods of extracting iodine and chlorine. I know that chlorine is extracted by electrolysis and iodine is vapourised and condensed but what are the reasons for these particular methods relating to the chemistry of chlorine and iodine? any help would be greatly aprechiated and 10 points to the answer that helps me the most! thanks!
2007-09-18 05:58:42 · 1 answers · asked by jono 2 in Science & Mathematics ➔ Chemistry
After electrolysis, Cl2 is a gas at room temperature and pressure, so collect it at the cathode and compress it.
Iodine is a solid at room temperature and pressure, so chill it and it passes directly from vapor to solid without an intermediate liquid phase (the opposite of sublimation).
Iodine occurs naturally in brines and sea water as salts like NaI. So you would have to electrolyze iodide salts or displace the elemental iodine from them with chlorine.
2NaI + Cl2 ===> I2 + 2NaCl
2007-09-18 06:16:10 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋