Analysis
From the above stoichiometric equations, we can find that:
- 1 mole of O2 → 2 moles of MnO(OH)2 → 2 mole of I2 → 4 mole of S2O32–
Therefore, after determining the number of moles of iodine produced, we can work out the number of moles of oxygen molecules present in the original water sample. The oxygen content is usually presented as mg/dm3.
Read more about this topic: Winkler Test For Dissolved Oxygen
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