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Unformatted text preview: dissolving metal reductions in organic chemistry where a metal serves as a source of electrons. As the metal releases electrons and is oxidized, it dissolves as metal ions. Some Group 1 (Li, Na, K), Group 2 (Mg, Ca), and other metals (Al, Fe, Sn) with their favorable oxidation potentials (E o ) are in this category. ox Zn Zn 2+ + 2e-E o ox = +0.762 V In the Clemmensen reduction, the surface of the zinc metal is activated by amalgamation with Hg. Mossy zinc is stirred in a mixture of mercuric chloride and concentrated HCl for a few minutes. The electrochemical potential of the metal surface is changed slightly by amalgamation and a more active surface is formed. It is believed that the redox reaction with the ketone occurs on the metal surface. The detailed mechanism is not known....
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This note was uploaded on 10/20/2009 for the course CHEM 322BL at USC.
- Organic chemistry