Chemical Forums
Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: kuromi on April 11, 2009, 12:38:53 PM
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Fe3+(yellow) + NCS- (colourless) <-> FeNCS2+ (blood red)
when i add one more drop of Fe3+ solution into test tube
and one more drop of NCS-solution into other test tube
explain why added Fe3+ solution is blood red while added NCS-solution is reddish dark ?
By le Chatelier's principle , the equilibrium position shifts from left to right when conc . increased . why the colors are different ?
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Fe(SCN)2+ is not the only compound formed. There are also Fe(SCN)2+ and Fe(SCN)3 and they probably are of different colours.
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Think about what happened to the other reactant and the end result of the combination of colour when you adding Fe3+ or thiocyanate.
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thank you for your ans.
;) ;)