Ex.  A volume of 12.53 ml of 0.051 M SeO2 reacts exactly with 25.5 ml of 0.1 M CrSO4 which is oxidized to Cr3+ To what oxidation state was the selenium converted b the reaction.

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Ex. In basic solution CrO42- ion oxidizes S2O32- ion to form Cr(OH)4 and SO42- ions respectively. How many ml of 0.154 Na2CrO4 solutions are required just to react with 40 ml of 0.246 M Na2S2 O3 solutions.

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Ex. What mass of N2H4 can be oxidized to N2 by 24 gm of K2CrO4 which is reduced to

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Ex. The ion An+ is oxidized to AO3 by MnO4 changing to Mn2+ in acid medium. Given that mole of An+ required  mole of MnO4. What is the value of n.

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Ex. 25 ml of 0.17 M HSO3 in strongly acidic solution required the addition of 16.9 ml of 0.01 M MnO4 for its complete oxidation to SO42-. In neutral solution it requires 28.6 ml. Assign oxidation no. of ‘Mn’ in each of the products.

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Ex. A given amount of Fe2+ is oxidized by x mol of MnO4 in acidic medium. Calculate mol of Cr2O72- required same amount of Fe2+ in acidic medium

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Ex. Calculate mol of (a) MnO4 and (b) Cr2O72- to oxidize 1 mol of FeC2O4 (ferrous oxalate) in acidic medium.

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Ex. A mixture of Na2C2O4 and KHC2O4. H2C2O4 required equal volume of 0.1 M KMnO4 and 0.1 M NaOH separately. What is the molar ratio of Na2C2O4, KHC2O4 and H2C2O4 in the mixture?

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Ex. 5.5 gm of a mixture of FeSO4. 7H2O and Fe2 (SO4)3. 9H2O requires 5.4 ml of 0.1 N KMnO4 solutions for complete oxidation. Calculate the no. of gm moles of hydrated ferric sulphate in the mixture?

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