Class Notes Feb 26

Class Notes Feb 26 - Announcements Friday Homework...

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2/26/2010 1 Announcements: Friday, February 26, 2010 Homework WebAssign #8- Due Wednesday, March 3 at 8:00 AM Recitation Next Week Week 8 – Redox of Halogens Lab Next Week- Spontaneity of Oxidation-Reduction Reactions Bring GLOVES!! Complete your prelab before recitation. Report due at the end of lab! Suggested Textbook Questions Continue Chapter 21 problems and reading. Shorthand Notation anode|anode compartment||cathode compartment|cathode If a half cell does not contain a conductive metal, an inert metal or a “ passive electrode ” must be used. Typically this would be platinum (Pt) or graphite. For example: Pt(s)|ClO 4 - (aq), ClO 3 - (aq), OH - (aq)||H + (aq)|O 2 (g)|Pt(s) Anode reaction (in base): ClO 3 - + 2OH - ClO 4 - + H 2 O(l) + 2e - Cathode reaction (in acid): O 2 (g) + 4H + + 4e - 2H 2 O Net reaction: 2ClO 3 - (aq) + 4OH - (aq) + O 2 (g) + 4H + (aq) 2ClO 4 - (aq) + 4H 2 O(l) Cell Potentials Work done by electrons: G = nFE E = cell potential in volts 1 V = 1 J/C F (Faraday) = charge on 1 mole of electrons F = 96,500 C/mol n = number of moles of electrons passed G = nFE
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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 Feb 26 - Announcements Friday Homework...

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