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!

2001 free response Question [ ]

  1. Feb 19, 2008 #1
    2001 free response Question [urgent]

    Hello Physics forum-
    Over the past couple of hours ive been trying to solve an AP Chem problem. I'm self studying for the AP exam and i got a copy of a bunch of past free response questions to help me study. Most are hard, and without a class, its even harder to understand. So now, after a lot of trial and error, I decided to ask this forum. Please help in any way, shape or form. I'm still not 100% sure how to even approach this problem, and I'd appreciate ANY input.

    I scanned the problem to make it easier for all of us:


    Thank you.
    Last edited: Feb 19, 2008
  2. jcsd
  3. Feb 20, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    I'll get you started...

    In the reaction you have on the reagent side, iodide (iodine in the -1 oxidation state). On the product side you have [tex]I_3^-[/tex]. What is the oxidation state of iodine in [tex]I_3^-[/tex]?

    What is the oxidation state of the sulfur in peroxysulfate? In sulfate?

    From there you should be able to answer a).
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: 2001 free response Question [ ]