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A sample of ferrous sulphate and ferrous oxalate was dissolved in dil. H_2SO_4. The compete oxidation of reaction mixture require 40 ml of N/15 KMnO_4. After the oxidation the reaction mixture was reduced by zn and H_2SO_4. On again oxidation by same KMnO_4 25 ml of KMnO_4 was required. Calculate the ratio of Fe atoms in ferrous sulphate and oxalate. |
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