80. Решение задачки по химии №13

3. Determine the mass of Na2SO4 formed as a result of titration of perchloric acid with sodium thiosulfate if 15 ml of 0.1 eq/l Na2S2O3 solution was used for titration: S2O32- H2O HClO4..→S SO42- 2H Cl-… Write an ORP.

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