How Do You Balance Complex Redox Reactions?

AI Thread Summary
To balance the redox reaction H2O + I2 + OCl- → IO3- + Cl- + H3O, the user attempted to split it into half-reactions but encountered issues with the final equation. The half-reactions derived were I2 + 6H2O → 2IO3- + 10e- + 12H+ and OCl- + 2e- + 2H+ → Cl- + H2O. The user’s final attempt resulted in the equation 5OCl- + I2 + 2H+ + H2O → 2Cl- + 2IO3 + 12H+, which did not balance correctly. The discussion highlights the complexity of balancing redox reactions and the need for careful accounting of electrons and charges. Assistance is sought to resolve the balancing issue before the assignment deadline.
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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