1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    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!

Relative Half-Cell Potentials

  1. Nov 26, 2007 #1
    yes ------Is Ni2+(aq) capable of oxidizing H2(g)?
    no -------Is Fe2+(aq) capable of reducing VO2+(aq)?
    no -------Is Cr3+(aq) capable of oxidizing Fe2+(aq) to Fe3+(aq)?
    yes ------Is Sn2+(aq) capable of oxidizing Fe2+(aq)?
    yes ------Is Fe3+(aq) capable of oxidizing Sn metal to Sn2+(aq)?
    no -------Is Fe2+(aq) capable of reducing Cr3+(aq) to Cr metal?


    can anyone quickly check these
     
  2. jcsd
  3. Nov 27, 2007 #2

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    We need to see some kind of explanation. Can you explain how you arrived at those answers?
     
  4. Nov 27, 2007 #3
    someone told me to do this

    Write down the standard reduction potential of the couple to be reduced.

    Write down the negative of the standard reduction potential of the couple to be oxidized.

    Add them up.

    Is the answer positive (yes/no)


    i did that and came to that conclusion but i need someone to check my answers before i submit them
     
  5. Nov 28, 2007 #4

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Your method is correct. I haven't checked your numbers but the first one doesn't look right.
     
    Last edited: Nov 28, 2007
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Relative Half-Cell Potentials
  1. Half cell potentials (Replies: 4)

Loading...