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123. Solving a chemistry problem
Uploaded:
25.07.2022
Content: 17.rar 19,38 kB
Content: 17.rar 19,38 kB
Product description
17. The determination of calcium in the prepared slag solution was carried out by the permanganometric method. To do this, 10 ml of a solution of oxalic acid with a concentration of c(1/2H2C2O4)=0.1016 mol/l was added to the analyzed solution, the excess of which was titrated with 5.20 ml of a solution of potassium permanganate with a concentration of c(1/5KMnO4)=0.1022 mol / l. Calculate the mass fraction (%, mass) of calcium in solution.
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