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500mg of iron (II) complex ferrous bisglycinate hydrochloride was dissolved in dilute H2SO4 and titrated with 0.020moldm-3 KMnO4 solution were required to reach the end point. Calculate the;
number of moles of Fe2+ in the capsule
mass of iron in the capsule
Molar mass of the iron (II) complex, assuming 1 mole of the complex contains 1 mole of iron. [Fe = 55.9gmol-1]
5Fe2+(aq) + MnO4-(aq) → 5Fe3+(aq) + Mn2+(aq) + 4H2O(l)
Sagot :
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