Thread: Le Chatelier Principle View Single Post
P: n/a
 Quote by Astronuc Possibly because Na promotes OH-[/url], which would tend to favor Fe3+ - IIRC, it has to do with oxidation potential.
I didn't study yet oxidation power. But even if Na promotes OH- it does not react, since the chemical equation is:

$$Fe(SCN)^{2+}$$ --> $$Fe^{3+}$$ + $$SCN^-$$

But if you could explain how... Thanks

 See - Determination of the Equilibrium Constant for the Formation of FeSCN2+
It requires some advanced knowledges. Wikipedia gave a hand.

 One could add thiocyanic acid to the solution, but that would tend to promote FeSCN2+
Yes. Because to add HSCN is to add SCN-. Correct?