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MnO(4)^(-) ions can be reduced in strong...

`MnO_(4)^(-)` ions can be reduced in strongly alkaline medium to give

A

`MnO_(2)`

B

`Mn^(1+)`

C

`MnO _(4) ^(2-)`

D

`MnO_(3)^(-)`

Text Solution

Verified by Experts

The correct Answer is:
C
`underset(("Purple"))(MnO_(4)^(-))+e^(-) to underset(("Green "))(MnO_(4)^(2-))`
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MnO_(4)^(-) ions are reduced in acidic conditions to Mn^(2+) ions whereas they are reduced in neutral condition to MnO_(2) . The oxidation of 25 mL of a solution x containing Fe^(2+) ions required in acidic condition 20 mL of a solution y containing MnO_(4) ions. What value of solution y would be required to oxidize 25 mL of solution x containing Fe^(2+) ions in neutral condition ?

Assertion : In acid solution, permanganate is reduced to Mn^(2+) by an excess of reducing agent. Reason : MnO_(4)^(-) reduced in Mn^(2+) in acidic medium and the product in the presence of an excess of permanganate is MnO_(2) .

NIKITA PUBLICATION-D-AND F-BLOCK ELEMENTS-MULTIPLE CHOICE QUESTIONS
  1. Formula of chromyl chloride is-

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  2. Pick out the incorrect statement.

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  3. MnO(4)^(-) ions can be reduced in strongly alkaline medium to give

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  4. On adding KMnO(4) to cold conc. H(2)SO(4), it gives

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  5. In acidic medium oxidation state of Mn changes from

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  6. The equivalent weights of KMnO(4) as an oxidising agent in acidic and ...

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  7. When KMnO(4) solution is added to hot oxalic acid solution the decolo...

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  8. Equivalent weight of KMnO(4) when it is convert into MnSO(4) is

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  9. Acidified KMnO(4) solution is decolourized by

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  10. For the redox reaction, MnO(4)^(-) + C(2)O(4)^(2-) + H^(+) rarr Mn^(...

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  11. Potassium manganite (K(2)MnO (3)) is formed when

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  12. Which of the following statements is not true ?

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  13. Baeyer's reagent is:

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  14. Following ions are equilibrium at Cr(2) O(7)^(2-) hArr CrO(4)^(2-)

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  15. The mineral from which potassium permagnate is manufactured

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  16. MnO(4)^(2-) is

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  17. The reaction, MnO(4)^(2-) +e^(-)hArr MnO(4)^(-) is shifted to right in

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  18. Equivalent mass of kMnO(4) in alkaline medium is

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  19. When an ecidified solution of ferrous sulphiate is treated with potass...

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  20. The shape of MnO(4)^(-) ion and the hybridisation of Mn in MnO(4)^(-) ...

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