01-12-04 06:44
No 482010
I did a search but only found things relating to tincture + the OCl- method.... Sorry if I missed something.
SWIM has 6M NaI and wants to convert to I2 (for water purification, of course) soooo....
2(NaI) + H2O2 + 2HCl -> I2 + 2NaCl + 2HOH
Right? Now here's what REALLY happened (should be correct molar proportions:)
12.5mL 6M NaI was added to flask, then 4.5 mL 30% H2O2. Mildly violent r(x) -- dark purple colour, no precipitate at this point. 7.88 mL conc. HCl added and some smoke and white precipitate formed. White precipitate vacuum filtered, but WAS WATER SOLUBLE. WTF? SWIM knows this prolly isn't iodine, but prolly not salt -- oxidation product (NaO??) Where did the iodine go? There was none left! Does SWIM need to add HCl first?
SWIM would try but is running out of NaI. SWIM also tried diluting and using 3% H2O2 (10 x as much, of course) but no precipitate formed at all. WTF is SWIM doing wrong? (HCl still added last.)
Thank you so very, very much for helping to make SWIM's water safer and cleaner!!!
(Hive Addict)
01-12-04 07:09
No 482016
Try dissolving it in dh20 first to make a 10% solution and then add your hcl followed by h202. Leave it overnight and you might get a surprise in the morning.
It wasn't Me!
(Stranger)
01-12-04 08:50
No 482032
Thanks! That makes SWIM feel a bit better.... he did leave it o/n so hopefully crystals will bee waiting when he gets home....
EDIT: SWIM got silver crystals. SWIM says Shorty is god!