-cyan- - 24-4-2007 at 08:30
hi,
would H2O2 oxidize H2S to S or to one of his oxides?
greetz
woelen - 24-4-2007 at 11:25
Probably to a whole mix of sulphur compounds, the exact result also depending on pH. You may expect sulphur, sulfate and possibly also traces of
sulfite (or sulphur dioxide) and dithionate.
vulture - 24-4-2007 at 13:22
Woelen hit the nail on the head.
The problem is that you're eating up H2S which is automatically going to change the pH unless you use a buffer of sorts. Also some of the products
could change the pH (sulphites, sulfur dioxide).
-cyan- - 25-4-2007 at 04:30
ok,i looked it up in the HoWi....he says that H2O2 will oxidize it only to S, not to SO2 or SO3
thx
woelen - 25-4-2007 at 07:05
Well, my experience is different. I have done quite a few experiments with sulfides, and these can be oxidized to almost everything. I forgot to
mention thiosulfate and tetrathionate.
I found it amazing to see how ugly sulphur compounds behave under slightly different experimental condition. It is very hard to obtain a single clean
reaction.