| At the Donor layer | ||
| ‘sr’ reservoir: | Hg2+(aq) + I−(aq) | → HgI42−(aq) + I−(aq) |
| excess | unreacted | |
| ‘dr’ reservoir: | 5I−(aq) + IO3−(aq) + 6H+(aq) | → 3I2(g) + 3H2O(l) |
| unreacted | ||
| At the Acceptor layer | I2(g) + I−-starch | → I3− -starch(aq) |
| purple complex |
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