Chemistry SAC: Equilibrium

[dianegaba]

Hello,

I have an equilibrium equation Fe(3+) + SCN(-1) -> <- Fe(SCN)(2+)

If someone could please explain what would happen if I added NaF or AgNO3 or Fe(NO3)2 or KSCN that would very much appreciated.

Thank you if you do respond

[Tyleralp1]

Hello,

I have an equilibrium equation Fe(3+) + SCN(-1) -> <- Fe(SCN)(2+)

If someone could please explain what would happen if I added NaF or AgNO3 or Fe(NO3)2 or KSCN that would very much appreciated.

Thank you if you do respond

This question requires you to recognise the fact that the added compounds are actually a combination of ions which may influence the equilibrium.

I'm sure you can fill in the entire explanations involve Le Chatelliers Principle but..

Addition of NaF, breaks into Na+, which reacts with the SCN- from the solution, forming Na(SCN), a solid, and so the deduction of SCN- pushes equilibrium to the left.

Ag+ will react with SCN-, making a solid..left

SCN- is added..right

The addition of Fe2+, I would assume reacts with SCN-, pushing equilibrium to the right. I'm not 100% sure on this one, but it would seem logical.