rose - 27-11-2002 at 22:33
Text
please the new method for the determination of potassium ferrate
madscientist - 28-11-2002 at 09:19
I do not understand the cryptic form of English that you are using.
Marvin - 30-11-2002 at 13:16
I think rose wants a method of determination of ferrate. React with a known amount of reducing agent, then titrate with an oxidiser, say with
iodide/starch as an indicator.
The difference between a blank oxidser/reducing agent titration is the amount of ferrate.
vulture - 1-12-2002 at 09:13
It doesn't have to be such hard work...
You should be able to crystallize the potassiumferrate as deep red crystals from the solution.
I don't know many other stuff that formes deep red crystals.
Marvin - 6-12-2002 at 13:58
Part of the solution will decompose before it forms crystals, not to mention problems of double crystals with impurities, seperation from other
soluable salts, mixed crystal formation...
Titration give you the correct amount of ferrate providing its done right. Ferrous and ferric ions can interfere if the reducing agent it not chosen
carefully though. If any reducing agent is used, the amount of ferric ions must be known and taken into account, this can be done fairly easily if
the ferrate is being made.