crazyheaven - 6-8-2008 at 02:07
What happens if MnO2 was mixed with KI and 9M sulfuric acid?
Can't seem to figure this one out.
[Edited on 6-8-2008 by crazyheaven]
woelen - 6-8-2008 at 02:26
The MnO2 will oxidize the iodide to iodine:
MnO2 + 4H(+) + 2I(-) --> Mn(2+) + I2 + 2H2O
At a concentration of 9M for the sulphuric acid, I also can imagine that the acid itself may be oxidizing the iodide to some extent as well, making
the reaction less clean (production of sulphur, hydrogen sulfide and sulphur dioxide). I would suggest to decrease the concentration of the acid to 4M
or something like that. At such a lower concentration the only reaction will be the one, given above.
crazyheaven - 6-8-2008 at 02:32
Thank you for the help. Didn't think I'd get such a fast reply.
Seems I would be able to learn a lot from this site.