68. Solving a chemistry problem
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68. Solving a chemistry problem
10. What ions, the concentrations of which are indicated in the table, can be determined by photocolorimetry?
ion C, mol/dm3 ion C, mol/dm3
Fe2 1•10-8 MnO4- 2•10-6
Fe3 3•10 -3 Cr2O72- 4•10-2
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