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10.52 g of ammonium iron (II) sulfate crystals, (NH4))2SO4.FeSO4.6H2O was weighed out, then dissolved in dilute sulfuric acid and the solution made up to 250cm3 in a volumetric flask. 25cm3 of this solution reacted with 23.8cm3 of a solution of potassium permanganate. Calculate the concentration of the potassium permanganate solution in: (a) moles per litre (b) grams of crystalline KMnO4 per litre
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