5. From a sample of uranium ore, it was transferred to uranium (IV) and titrated to 0.0100 N. potassium permanganate solution:
2MnO4- 5U4 2H2O ↔ 2Mn2 5UO22 4H
Calculate the percentage of uranium in the ore from the following potentiometric titration results:
VKMnO4, cm3 2.0 10.0 18.0 19.8 20.0 20.2 22.0
E, mV 301 303 359 389 1173 1486 1498
Plot titration curves in the coordinates E - V and ΔE/ΔV - ΔV. Write the Nernst equation for this reaction.
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