85. For the titration of iodide ions, MnO4– ions were used, which were generated in the anode space of the coulometric cell in a sulfuric acid medium. The equivalence point was set 21 potentiometrically. Calculate the mass (mg) of iodide in the solution if the titration continued for time t at a constant current I (Table 16). Table 16
Problem 82 83 84 85
t, c 272 240 225 308
I, mA 18.0 16.0 14.0 20.0

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