Need help on electrochemistry

Xylitol

Diamond Member
Aug 28, 2005
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I have no idea how to do this problem:
Is H+ (aq) capable of oxidizing Cu(s) to Cu2+ (aq)?
Cu2+ + 2e -> Cu -------- E (V) = +0.337

Thanks
 

Xylitol

Diamond Member
Aug 28, 2005
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Originally posted by: Summit
get out of here bladder 23. umm what sis the E(V) for H+?

She said on the homework to look at the table of volts for reduction expressions @ Standard, but I don't see any H+ thing.
 

summit

Platinum Member
Sep 27, 2001
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i thought it was something like 0 therefore Cu(s) to other form yield -.337 which makes it capable, i'm not sure.do you see any for H2O or any reaction with H+ on either side?
 

Xylitol

Diamond Member
Aug 28, 2005
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Originally posted by: Summit
i thought it was something like 0 therefore Cu(s) to other form yield -.337 which makes it capable, i'm not sure.do you see any for H2O or any reaction with H+ on either side?

i see a hydrogen peroxide reaction
Oh nevermind - my teacher's notes that are printed out is really faded. The part with the 0.0 V is the H reaction I think because it ends with -> H2(g) even though I can't see it well.'

Thanks
 

magomago

Lifer
Sep 28, 2002
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Just make sure the Gibbs Free Energy of the products is lower than the Free Energy of the Reactants.

edit:

yes i realize this is totally useless info and you don't need it...but its better than typing "postcount++" ;)


but i honestly think its something like this

H+ should be zero, b/c everything is taken as a reference to that (IIRC)

also you want to go backwards from you really have -.337

hope that is enough to jump start your brain :p
 

IEC

Elite Member
Super Moderator
Jun 10, 2004
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H+ should be zero, as it is the standard IIRC.