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Equivalent weight of KMnO(4) acting as a...

Equivalent weight of `KMnO_(4)` acting as an oxidant in acidic medium is

A

The same as its molecular weight

B

(b)Half of its molecular weight

C

(c )One-third of its molecular weight

D

(d)One-fifth of its molecular weight

Text Solution

Verified by Experts

The correct Answer is:
D


`Eq. wt. =(Mol. Wt.)/5`
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The equivalent weight of KMnO_(4) in (a) neutral medium, (b) acidic medium and (c ) alkaline medium is M//.. ( where M is mol.wt. of KMnO_(4) )

The equivalent weight of KMnO_4 in a redox reaction in a neutral medium is .

KMnO_(4) reacts with KI in acidic medium gives

A : Equivalent weight of KMnO_(4) in acidic medium is M/5 . R : In acidic medium 1 mol of MnO_(4)""^(-) gains 5 electron.

STATEMENT-1 KMnO_(4) acts as powerful oxidising agent in acids, alkaline and neutral medium. STATEMENT-2: Equivalent weight of KMnO_(4) in acidic medium in M/5 and in strongly alkaline medium in M/3. STATEMENT-3 : KMnO_(4) solution is used as a primary standard and acts as self indicator during its titration more Mohr salt.

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.

A2Z-SOME BASIC CONCEPTS OF CHEMISTRY-Redox Titration And Stoichiometry In Various Types Of Reaction
  1. In the neutralization of Na(2)S(2)O(3) using K(2)Cr(2)O(7) by idometry...

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  2. When N(2) is converted into NH(3), the equivalent weight of nitrogen w...

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  3. Equivalent weight of KMnO(4) acting as an oxidant in acidic medium is

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  4. In the reaction: Na(2)S(2)O(3)+4Cl(2)+5H(2)O rarr Na(2)SO(4)+H(2)SO(4)...

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  5. In the reaction 2CuSO(4)+4KI rarr 2Cu(2)I(2)+I(2)+2K(2)SO(4) the equ...

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  6. KMnO(4) react with oxalic acid according to the equation, 2MnO(4)^(-)+...

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  7. 28 NO(3)^(-)+3As(2)S(3)+4H(2)O rarr 6AsO(4)^(3-)+28NO+9SO(4)^(2-)+H^(+...

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  8. In order to prepare one litre normal solution of KMnO(4), how many gra...

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  9. HNO(3) oxidies NH(4)^(+) ions to nitrogen and itself gets reduced to N...

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  10. What is the concentration of nitrate ions if equal volumes of 0.1 M Ag...

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  11. How many litres of Cl(2) at STP will be liberated by the oxidation of ...

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  12. A solution containing Na(2)CO(3) and NaOH requires 300 ml of 0.1 N HCl...

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  13. Which of the following cannot give iodometric titrations?

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  14. KMnO(4) reacts with ferrous ammonium sulphate according to the equatio...

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  15. Calculate the mass of BaCO(3) produced when excess CO(2) is bubbled th...

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  16. The number of moles of KMnO(4) required to oxidise 1 mol of Fe(C(2)O(4...

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  17. The ratio of amounts of H(2)S needed to precipitate all the metal ions...

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  18. 100 ml of 0.1 N hypo decolourised iodine by the addition of x g of cry...

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  19. How many grams of caustic potash required to completely neutralise 12....

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  20. What should be the weight and moles of AgCl precipitate obtained on ad...

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