Challenge Question!
In many electrochemical experiments the average capacitance of an electrode is approximately 20 $\mu F/cm^2$.

How many coulombs (of surface charge) are there on an electrode
of 0.50 cm^2 area that is charged up to – 1.0 V?

Assuming that a typical metal atom occupies about 15 $Å^2$ of a metal surface, how many “excess” electrons would there be per metal atom on the surface of this electrode? How is it possible that an atom can have a non-integer number of excess electrons?

Question

Challenge Question!
In many electrochemical experiments the average capacitance of an electrode is approximately 20 $\mu F/cm^2$.

How many coulombs (of surface charge) are there on an electrode 
of 0.50 cm^2 area that is charged up to – 1.0 V?

Assuming that a typical metal atom occupies about 15 $Å^2$ of a metal surface, how many “excess” electrons would there be per metal atom on the surface of this electrode? How is it possible that an atom can have a non-integer number of excess electrons?

abb0t · Answer

don't isotopes have non-integer number values for electrons? :3

aaronq · Answer

really?! i wasn't aware of that :S  ..this question is aimed more at metallic bonds.

aaronq · Answer

soo, @abb0t, how do isotopes have non-integer values for e? Is this some quantum mechanics wizardry?

abb0t · Answer

I was thinking of more empirical values. Lol

aaronq · Answer

ohhh okok

abb0t · Answer

Is this electrochemistry?

aaronq · Answer

indeed

ookawaiioo · Answer

So tempted to work on this problem!

aaronq · Answer

you should try it out! no one seems to want to even attempt it :( haha

ookawaiioo · Answer

It actually looks too hard for me...... lol ahhhhh

aaronq · Answer

we'll i'll post a solution in a few days if no one answers it, if you're interested