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123. Solving a chemistry problem
Uploaded:
25.07.2022
Content: 13.rar 27,39 kB
Content: 13.rar 27,39 kB
Product description
13. To 10 ml of a solution containing calcium, 10 ml of a solution of H2C2O4 was added, the excess of which was titrated with 4.25 ml of a solution of potassium permanganate with a concentration of c(1/5KMnO4)=0.1040 mol/l. For 1 ml of H2C2O4 solution during titration, 1.02 ml of KMnO4 solution is consumed. Determine the mass fraction (%, mass) of calcium in the analyzed solution.
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