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GCT
#10
May17-05, 08:26 PM
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isn't it just a metal + acid ----> hydrogen + salt reaction?
it probably has to do with each metal's characteristic LUMO, lowest unoccupied molecular orbital. The following website has a brief explanation (regarding our case...you'll have to scroll to the very bottom, takes a while)

http://www.meta-synthesis.com/webbook/12_lab/lab.html