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KMnO(4) in basic medium is reduced to...

`KMnO_(4)` in basic medium is reduced to

A

`K_2 MnO_4`

B

`MnO_2`

C

`Mn(OH)_2`

D

`Mn^(2+)`

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The correct Answer is:
B
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KMnO_(4) in basic medium is used as

Assertion :- Equivalent weight of KMnO_(4) in acidic medium is M//5 (M=molecular weight) while in basic medium, it is equal of M/3. Reason :- In acidic medium, 1 mol of MnO_(4)^(-) gains 5 mole electrons while in basic medium it gains 3 mole electrons.

The molarity (m) of KMnO_(4) in the acidic medium is (densityh of KMnO_(4) solution =1.58gmL^(-1)Mw(KMnO_(4))=158gmol^(-1))

KMnO_(4) reacts with KI in basic medium to from I_(2) and MnO_(2) . When 250 mL of 0.1 M KI solution is mixed with 250 mL of 0.02 M KMnO_(4) in basic medium, what is the number of moles I_(2) formed ?

100mL of H_2O_2 is oxidised by 100mL of 0.01M KMnO_4 in acidic medium (MnO_4^(ɵ) reduced to Mn^(2+) ). 100mL of the same H_2O_2 is oxidised by VmL of 0.01M KMnO_4 in basic medium. Hence V is

Molecular weight of KMnO_(4) in acidic medium and neutral medium will be respecitvely -

TARGET PUBLICATION-D AND F-BLOCK ELEMENT -COMPETITIVE THINKING
  1. KMnO(4) can be prepared from K(2)MnO(4) as per the reaction 3MnO(4)^...

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  2. Upon heating poatssium permanganate, which of the following compou...

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  3. KMnO(4) in basic medium is reduced to

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  4. The number of moles of KMnO(4) reduced by 1 "mol of" KI in alkaline me...

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  5. When KMnO(4) is reduced with oxalic acid in acidic solution, the oxida...

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  6. The reaction of aqueous KMnO4 with H2 O2 in acidic conditions gives.

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  7. Name the gas that can readily decolourise acidified KMnO(4) solution:

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  8. The colour and magnetic nature of mangante ion (MnO(4)^(2-)) is

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  9. Solution of MnO(4)^(-) is purple-coloured due to :

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  10. Potassium permanganate is used.

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  11. Which of the following is Baeyer's reagent ?

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  12. Lanthanoids are

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  13. The atomic number of Gadolinium (Gd) is 64. The CORRECT electronic con...

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  14. Gadolinium belongsd to 4f series. It's atomic number is 64. which of t...

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  15. Which of the following oxidation states is the most common among the l...

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  16. Which is the oxidation state generally found in lanthanides?

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  17. Which one of the following lanthanide ions does NOT exhibit paramagnet...

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  18. Which of the following lanthanoids ions is diamagnetic?

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  19. What is the general molecular formula of the products obtained on heat...

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  20. Reason of lanthanoid contraction is

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