Sciencemadness Discussion Board
Not logged in [Login ]
Search the forums Search   Frequently Asked Questions FAQ   View member list Member List   Today's Posts Today's Posts   Forum Stats Stats Back to: sciencemadness.org
Sciencemadness Discussion Board » Fundamentals » Chemistry in General » reaction problem Go To Bottom

Printable Version  
Author: Subject: reaction problem
coolrunnings
Harmless
*



Posts: 2
Registered: 25-10-2005
Member Is Offline

Mood: No Mood

[*] posted on 25-10-2005 at 00:14
reaction problem

I reacted CuSO4 with KI in solution
As expected a precipitate was formed, however, CuI is suppost to be a grey precipitate while i got a red precipitate.

I'm guessing there was some sort of ligand formed.

Can anyone please help me with a definitive answer?
View user's profile View All Posts By User
Mephisto
Chemicus Diabolicus
***



Posts: 294
Registered: 24-8-2002
Location: Germany
Member Is Offline

Mood: swinging

[*] posted on 25-10-2005 at 02:29


Usually the precipitate has a brown colour because of the precipitating iodine. The unstable CuI2 is formed intermediately, which decomposes to CuI and I2.

~Mephisto



Visit the German synthesis collection LambdaSyn and our new LambdaForum!
View user's profile Visit user's homepage View All Posts By User
coolrunnings
Harmless
*



Posts: 2
Registered: 25-10-2005
Member Is Offline

Mood: No Mood

[*] posted on 25-10-2005 at 02:30


thank you very much
i discovered then answer soon after i asked this question.
sorry this was an easy question i had a mental blank or something.

[Edited on 25-10-2005 by coolrunnings]
View user's profile View All Posts By User

 Sciencemadness Discussion Board » Fundamentals » Chemistry in General » reaction problem   Go To Top