1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Electrochemistry - Half Cell Reactions

  1. Aug 1, 2012 #1


    User Avatar
    Gold Member

    A Galvanic Cell is given. Write its Anode and Cathode half reactions, complete cell reaction and thus determine if the given is concentration cell.

    [itex]Pt|O_2(1\; atm)|NaO\! H(10^{-3}M)||H_2SO_4(0.5M)|O_2(1\;atm)|Pt[/itex]

    I know that at anode, Oxygen will get oxidised, maybe from NaOH solution and at cathode, Oxygen will get reduced.

    Here's what I think of anodic reaction
    [itex]2O\!H^-\rightarrow 2H^++O_2+4e^-[/itex]

    And the mighty cathodic reaction
    [itex]O_2+4e^-+2H^+\rightarrow 2O\!H^-[/itex]

    And thus, this cell is just a concentration cell (i.e. E°(cell) = 0)

    Am... I right??? :uhh:
  2. jcsd
  3. Aug 3, 2012 #2


    User Avatar
    Gold Member

    Hello...??? Can please anyone answer the question that I am right with my guesswork??? This question is eating me inside out.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook