Hey guys,
Does anyone have a recipe to make up 1L of 1M Fe(SCN)2+ ?? I did it last year & now can't find my recipe!
I know I didn't use a stock chemical for it & I remember it involving making up 2 vats of chemicals to then mix to make a third..... I think!!!!
Thanks so much if you can help!
Cheers Kel
Potassium thiocyanate
- Graham Kemp
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Re: Potassium thiocyanate
You just need to add 1 mole KSCN to 1 mole Fe(NO3)3 in an acidic solution (use nitric) and dilute to volume. Then store away from light.
The acid keeps the Fe{3+} ions stable and prevents the formation of Fe(OH){2+}. The thiocyanateiron complex will form in an equilibrium reaction; a blood red colour should form. It's the classic qualatively test for the presence of iron(III) in solution.
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Re: Potassium thiocyanate
where does the Potassium go?
- Graham Kemp
- Posts: 173
- Joined: 22 Nov 2011, 09:21
- Job Title: Laboratory Assistant
- School: St John's School
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- State/Location: QLD
Re: Potassium thiocyanate
Nowhere. The potassium ions remain in solution.mtg wrote:where does the Potassium go?