Dismiss Notice
Check out the new Application Assistant, where you can calculate your LizzyM score, see how you rank compared to other applicants, and see a list of schools where similar students were accepted.

How to decide which one is getting oxidized/reduced

Discussion in 'MCAT Study Question Q&A' started by Sammy1024, 05.16.14.

  1. SDN is made possible through member donations, sponsorships, and our volunteers. Learn about SDN's nonprofit mission.
  1. Sammy1024

    Sammy1024

    Joined:
    12.12.13
    Messages:
    701
    If you're given a question where it just lists stuff like Cu2+ Cu Zn2+ Zn and then asks you to write out the equation where it'll be like

    Zn2+ + Cu -> Zn + Cu2+

    How do you decide if the Zinc should be charged first and goes to being 0 charge or the Copper?

    And then as a side note, e- go anode to cathode and so that's no matter what right? Doesn't matter if it's galvanic or electrochemical cell?
     
  2. SDN Members don't see this ad. About the ads.
  3. Teleologist

    Teleologist 2+ Year Member

    Joined:
    07.07.13
    Messages:
    610
    Location:
    on your 6
    Status:
    Pre-Medical
    Well opposites attract so what do you think?
     
  4. SuperSneaky24

    SuperSneaky24

    Joined:
    11.27.13
    Messages:
    89
    Status:
    Pre-Medical
    I believe if you're just given those elements/ions without a table of electric potentials, then it's going to be difficult.

    And yup you're correct. Reduction always occurs at the cathode, while oxidation always occurs at the anode. The anodes/cathodes are simply switch sides between galvanic and electrolytic cells. That means electrons always go from the site of oxidation to the site of reduction, and thus go from anode to cathode always.
     

About the ads

Share This Page