four iron tablets which had a mass of 1.25g was dissolved in 50cm3 of 1.0 mol dm-3 of H2SO4. and then diluted to have a volume of 250cm3 with distilled water.
7.3 of 0.01 mol dm-3 KMnO4 was required to neutralise 25cm3 of the solution.
What is the mass of iron in the tablet?
Literature value, each tablet contains 300mg of FeSO4
PLEASE HELP I AM STUCK
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