How Can I Solve This AP Chemistry Free Response Question?

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SUMMARY

The forum discussion centers around solving a specific AP Chemistry free response question from 2001, focusing on oxidation states of iodine and sulfur in various compounds. The user seeks assistance in understanding the oxidation state of iodine in the I3- ion and the oxidation states of sulfur in peroxysulfate and sulfate. The inquiry highlights the challenges faced by self-studying students in grasping complex chemistry concepts without formal instruction.

PREREQUISITES
  • Understanding of oxidation states in chemical compounds
  • Familiarity with the structures of iodine and sulfur compounds
  • Knowledge of AP Chemistry curriculum and exam format
  • Ability to analyze chemical reactions and equations
NEXT STEPS
  • Review the concept of oxidation states in inorganic chemistry
  • Study the properties and reactions of iodine and its compounds
  • Learn about peroxysulfate and its role in redox reactions
  • Practice additional AP Chemistry free response questions for better preparation
USEFUL FOR

Students preparing for the AP Chemistry exam, particularly those self-studying and seeking clarification on complex topics such as oxidation states and chemical reactions.

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2001 free response Question [urgent]

Hello Physics forum-
Over the past couple of hours I've 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:

http://img168.imageshack.us/img168/1974/57575757557copysi8.jpg

Thank you.
 
Last edited by a moderator:
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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 I_3^-. What is the oxidation state of iodine in I_3^-?

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

From there you should be able to answer a).
 

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