Class Notes Mar 10

Class Notes Mar 10 - 3/10/2010 Announcements: Wednesday,...

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3/10/2010 1 Announcements: Wednesday, March 10, 2010 Homework WebAssign #9- Due Thursday , March 11 at 8:00 AM WebAssign #10- Due Wednesday, March 17 at 8:00 AM Recitation Week 9 – Electrochemistry Lab - Voltaic Electrochemical Cells Complete your prelab before recitation. BRING GLOVES! Suggested Textbook Questions Continue Chapter 22 problems and reading. What is the oxidation state on Mn in the following complex ion? K 4 [MnBr 2 Cl 2 I 2 ] March 10, 2010 - CT#1 A. +6 B. +4 D. -2 E. -4 C. +2 K 4 [MnBr 2 Cl 2 I 2 ] 4K + Mn + 2Br + 2Cl + 2I = 0 4(+1) + Mn + 2(-1) + 2(-1) + 2(-1) = 0 Mn = +2 Mn is a d 5 metal here. 1. The cation is written before the anion. Writing Formulas for Coordination Complexes (pp. 765 - 766) 2. The charge of the cation(s) is balanced by the charge of the anion(s). 3. In the complex ion, neutral ligands are written before anionic ligands, and the formula for the whole ion is placed in brackets. Ex. 2K + + [Mn(NH 3 ) 2 Br 4 ] 2- → K 2 [Mn(NH 3 ) 2 Br 4 ] 1. The cation is written before the anion.
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This note was uploaded on 03/23/2010 for the course CHEM 1131 taught by Professor Redin,kend during the Spring '08 term at Colorado.

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Class Notes Mar 10 - 3/10/2010 Announcements: Wednesday,...

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