April 23, 2024, 03:18:26 PM
Forum Rules: Read This Before Posting


Topic: Electrolysis Prediction  (Read 4902 times)

0 Members and 1 Guest are viewing this topic.

Offline chrisf

  • New Member
  • **
  • Posts: 7
  • Mole Snacks: +0/-0
Electrolysis Prediction
« on: July 15, 2008, 11:00:49 PM »
I'm kind of confused with these questions...

Each aqueous solution below undergoes electrolysis. Consult a table of redox potentials to predict the reaction occuring at each electrode as well as the overall cell reaction.

CuF2


Cathode Reaction:
Anode Reaction:
Cell Reaction:


AuBr

Cathode Reaction:
Anode Reaction:
Cell Reaction:


LiCl

Cathode Reaction:
Anode Reaction:
Cell Reaction:


Could you possibly work out one of them so I get the jist of it and can work out the rest? I get the idea.. you need to look up the potentials to compare to the potentials for the electrolyzation of water to see what will be oxidized/reduced but something's just not clicking.

I appreciate any and all assistance! Thanks!

Offline vhpk

  • Full Member
  • ****
  • Posts: 259
  • Mole Snacks: +12/-25
  • Gender: Male
Re: Electrolysis Prediction
« Reply #1 on: July 16, 2008, 12:12:04 AM »
You must determine what will exist in cathode and anode and what process will occur. In fact, cell is cell and electrolysis is electrolysis:
Quote
Each aqueous solution below undergoes electrolysis. Consult a table of redox potentials to predict the reaction occuring at each electrode as well as the overall cell reaction.
Don't understand, explain more plz.
However, in cathode the reduction process happen while in the anode the oxidizing process occurs.
Genius is a long patience

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7979
  • Mole Snacks: +555/-93
  • Gender: Male
Re: Electrolysis Prediction
« Reply #2 on: July 16, 2008, 02:31:59 AM »
Check any university textbook on general chemistry.
In the case of LiCl electrolysis a total reaction is (unbalanced)
LiCl + H2O = LiOH + H2 + Cl2
AWK

Sponsored Links