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Year 11 Chem

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Mao:

--- Quote from: bec on December 30, 2007, 12:30:12 am ---oh yeah, redox! it's coming back to me now...
thank you!
so basically, the only use (for a pre- unit 3/4 chem student anyway) of the electrochemical series is to determine if a redox reaction will occur and if so, which will be the oxidant etc?

--- End quote ---
mmm the electrochemical series gives you information on how the redox reaction occurs, what how is the oxidant reduced, how is ther reductant oxidised, their half equations, if acid/base is produced (in case water is involved), and if an acidic environment is required, the voltage generated, blah blah blah

a more useful tool for determining if a redox reaction occur is oxidation numbers, its simple, quick, easy enough to work in your head, and pretty accurate, you dont even need the full equation, so long as you know the reactants and products :D

Collin Li:
I think you're being confusing there.


--- Quote from: Obsolete Chaos on December 30, 2007, 08:58:14 pm ---a more useful tool for determining if a redox reaction occur is oxidation numbers, its simple, quick, easy enough to work in your head, and pretty accurate, you dont even need the full equation, so long as you know the reactants and products :D

--- End quote ---

You should be saying: "to identify if a given chemical reaction is a redox process" instead of "if a redox reaction occur [sic]." Oxidation numbers are useful to show that a particular reaction is a reduction-oxidation process, but they don't tell us if the reaction will occur.

You do need the electrochemical series to know if a redox equation occurs (spontaneously).

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