124. Solving a chemistry problem
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124. Solving a chemistry problem
378. A weighed portion of potassium bichromate 0.6813 g dissolved in 300 ml of water. What volume of this solution should be taken so that after adding an excess of KI to it, 23.16 ml of a Na2S2O3 solution with a concentration of 0.1000 mol/l is consumed for titration.
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