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How do you find the concentration?
An aqueous solution of FeSO4(NH4)2SO4.H20 contains 2.88g/dm^3 SO4^2- (sulphate) ions. What is the Fe^2+ (ferrous) concentration in mol/dm^3?
(molar mass of O-16, S-32, N-14, Fe-56)
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- Roger the MoleLv 78 years agoFavorite Answer
Looking at the formula, there are two SO4{2-} ions for each Fe{2+} ion.
(2.88 g/dm^3 SO4{2-}) / (96 g SO4{2-}/mol) x (1 mol Fe{2+} / 2 mol SO4{2-}) =
0.0150 mol Fe{2+}/dm^3
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