L31_Elec3

L31_Elec3 - Standard reduction potentials: - Reference:...

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Standard reduction potentials: - Reference: 2H + +2e=H 2 , E 0 =0 V - Determine relative reduction/oxidation strength - Can be used to calculate cell potentials Very large negative E 0 : strong reducing agents DEMO: alkali metals (Li, Na, K) with water http://video.google.com/videoplay?docid=-2134266654801392897 http://video.google.com/videoplay?docid=-2134266654801392897
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Braniac alkali metal show is a fraud…. … in a 2004 episode, the producers compromised. Explaining what happened when the metals were put in the bath, a crew member said: “Absolutely bloody nothing. The density of caesium ensured it hit the bottom of the bath like a lead weight. The volume of water then drowned out the thermal shock. They could not go home empty-handed. So they rigged a bomb in the bottom of the bath.” Real alkali metals/water experiments: http://www.theodoregray.com/PeriodicTable/AlkaliBangs/index.html
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Cu/CuSO 4 || Cu/CuSO 4 cell: Would it work? Reduction half-cell (cathode):
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This note was uploaded on 07/22/2008 for the course CHEM 115b taught by Professor Reisler during the Spring '08 term at USC.

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L31_Elec3 - Standard reduction potentials: - Reference:...

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