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combining half equations watch

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    when combing the half equation of 2I– → I2 + 2e– and 2IO3–+10I–+12H+ →6I2+6H2O

    why is the answer:
    2IO3–+10I–+12H+ → 6I2+6H2O

    why doesn't the combined half equation include anything to do with this half equation: 2I– → I2 + 2e–

    when is this the case?

    is combining half equation the same as redox equation
 
 
 
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