331 - 3/31/2008 Announcements: Monday, March 31, 2008...

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3/31/2008 1 Announcements: Monday, March 31, 2008 Homework WebAssign #11- Due Wednesday, April 2 at 8:00 AM Recitation Print Week 11- Solubility Equilibria AND Pre-Recitation! Lab Lab 8- Separation of Metal Ions Complete your prelab (p. 75) before recitation. Three week lab! Suggested Textbook Questions Finish reading Chapter 19, sections 3 & 4, and working problems (see syllabus). Select the correct equilibrium constant expression for the following reaction. Ag + (aq) + 2CN - (aq) Ag(CN) 2 - (aq) March 31, 2008 - CT#1 A. [Ag + ][CN - ] 2 B. [Ag + ][CN - ]/[Ag(CN) 2 - ] C. [Ag + ][CN - ] 2 /[Ag(CN) 2 - ] D. [Ag(CN) 2 - ]/{[Ag + ][CN - ]} E. [Ag(CN) 2 - ]/{[Ag + ][CN - ] 2 } This is the formation constant (K f )! It is the equilibrium constant for the formation of a complex ion. Another K- K f K f is the formation constant . It is the equilibrium constant for the one-step formation of a complex ion from a metal ion and ligands. Cu 2+ (aq) + 4NH 3 (aq) Cu(NH 3 ) 4 2+ (aq) metal ion + #ligands complex ion These are usually large numbers!
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This note was uploaded on 02/25/2010 for the course CHEM 1131 taught by Professor Redin,kend during the Spring '08 term at Colorado.

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331 - 3/31/2008 Announcements: Monday, March 31, 2008...

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