How Do You Balance Complex Redox Reactions?

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SUMMARY

The discussion focuses on balancing the redox reaction involving H2O, I2, and OCl-. The user attempts to balance the reaction by splitting it into half-reactions, resulting in I2 + 6H2O → 2IO3- + 10e- + 12H+ and OCl- + 2e- + 2H+ → Cl- + H2O. The user encounters issues when combining the half-reactions, leading to confusion about the correct stoichiometry. The final balanced equation should be 5OCl- + I2 + 6H2O → 2Cl- + 2IO3- + 12H+.

PREREQUISITES
  • Understanding of redox reactions and their components
  • Knowledge of half-reaction method for balancing equations
  • Familiarity with oxidation states and electron transfer
  • Basic skills in stoichiometry and chemical equations
NEXT STEPS
  • Study the half-reaction method in detail for redox reactions
  • Learn about balancing complex redox reactions in acidic and basic solutions
  • Explore common pitfalls in balancing redox reactions
  • Practice with additional examples of redox reactions to reinforce understanding
USEFUL FOR

Chemistry students, educators, and anyone seeking to improve their skills in balancing redox reactions in chemical equations.

erjkism
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Balancing a Redox Reaction.. urgent

I have an assingment that is due tomorrow for my college chemistry class and i am stuck on the last problem. I need to balance the following redox reaction, but everytime i try it doesn't balance...

H2O +I2 + OCl- ? IO3- + Cl- + H3O

when i split it up into the half reactions i get
I2 + 6H20 ? 2IO3- + 10e- + 12H+
OCl- + 2e- + 2H+ ? Cl- + H2O
which adds up to be this

5OCl- + I2 + 2H+ + $H2O ? 2Cl- + 2IO3 + 12H+

i don't get why it doesn't work. can someone show me what to do?? i have already searched the internet for tutorials, and i think i am doing everything correct.
 
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OH yea the question mark (?) is supposed to be an arrow

:approve:
 

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