Redox Equilibria Question

Chemistry discussion, revision, exam and homework help.

Announcements Posted on
TSR launches Learn Together! - Our new subscription to help improve your learning 16-05-2013
IMPORTANT: You must wait until midnight (morning exams)/4.30AM (afternoon exams) to discuss Edexcel exams and until 1pm/6pm the following day for STEP and IB exams. Please read before posting, including for rules for practical and oral exams. 28-04-2013
Sign in to Reply
  1. devz94's Avatar
    • New Member
    • Posts: 2
    Redox Equilibria Question
    Stuck on the question below, if anyone could explain the answer to me..

    Refer to the standard electrode potentials for the four chemical equations below to decide which describes a reaction which is energetically feasible.

    Click image for larger version. 

Name:	IMG00054-20120416-2145.jpg 
Views:	39 
Size:	113.9 KB 
ID:	142402
  2. Zishi's Avatar
    • Peer Of The TSR Realm
    • Location: Sacred Realm
    Re: Redox Equilibria Question
    Are you provided with a "Data Booklet" during your exam? The Standard Electrode Potential values in it would help you to solve this question.
  3. devz94's Avatar
    • New Member
    • Posts: 2
    Re: Redox Equilibria Question
    Yes I am. However when using the booklet it seems that there is no answer to this question if you attempt it you will see why.
  4. thegodofgod's Avatar
    • TSR Legend
    • Location: London
    • Posts: 10,878
    Re: Redox Equilibria Question
    (Original post by devz94)
    Yes I am. However when using the booklet it seems that there is no answer to this question if you attempt it you will see why.
    Remember that the reduction potentials in the table are half-equations.

    The ones in the question in the OP are full-equations.

    So for each reaction, you need to separate the full-equation into half-equation, and then work out the feasibility of the overall reaction.

Sign in to Reply
Share this discussion:  
Article updates
Moderators

We have a brilliant team of more than 60 volunteers looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Reputation gems:
The Reputation gems seen here indicate how well reputed the user is, red gem indicate negative reputation and green indicates a good rep.
Post rating score:
These scores show if a post has been positively or negatively rated by our members.