2. A portion of 24.00 g of FeNH4(SO4)2*12H2O salt was dissolved in a volumetric flask with a capacity of 1.0 dm3. For titration of 10.0 cm3 of this solution, 10.3 cm3 of a complexone III solution was used. Calculate the molar concentration of the complexone III solution, its titer for Fe2O3 and for CaO.

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