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Why Iodine Hypochlorite Reacts under Basic Conditions
I2+5ClO-+2OH-=2IO3-+5Cl-+H2O
Does the mixture of chlorite and iodine ion produce chlorine dioxide and iodine rapidly? If so, what are the reaction equations or principles? O (∩_∩) O Thank you!
Both chlorine dioxide and chlorite are oxidants, both of which oxidize iodine ions and precipitate iodine
ClO2+ I --→ ClO2-+1/2I2 at pH =7
Number of oxidations from 4→3
At pH=1 to 3,
ClO2+5HI→H++Cl-+H2O+5/2I2,
Number of oxidations from 4→-1
ClO2-+4HI→2I2+Cl-+2H2O, oxygen
Decomposition from 3 to 1
Therefore, the determination of chlorine dioxide and chlorite can be carried out by single sampling and continuous titration with different PH values.
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