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In alkaline solution KMnO(4) reacts as f...

In alkaline solution `KMnO_(4)` reacts as follows
`2KMnO_(4)+2KOH rarr 2K_(2)MnO_(4)+H_(2)O+O`
Therefore, its equivalent weight will be

A

`31.6`

B

`63.2`

C

`126.4`

D

158

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The correct Answer is:
D
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In permanganate titrations, potassium pemanganats is used an an oxidizing agent in acidic medium. The medium is maintained acidic by the use of dilute sulphuric acid. Potassium permanganate acts as self indicator . The potential equation, when potassium permanganate acts as an oxidizing agent is 2KMnO_(4) + 3H_(2)SO_(4) to K_(2)SO_(4) + 2MnSO_(4) + 3H_(2)O + 5[O] or MnO_(4)^(-) + 8H^(+) + 5e^(-) to Mn^(2+) + 4H_(2)O Before the end point, the solution remains colourless but after teh equivalence point only one extra drop of KMnO_(4) solution imparts pink colour , i.e. appearance of pink colour indicates end point. These titrations are used for estimation of ferrous salts, oxalic acid, oxalates, hydrogen peroxide, As_(2)O_(3) etc. In alkaline condition, KMnO_(4) reacts as follows : 2KMnO_(4) + 2KOH to 2K_(2)MnO_(4) + H_(2)O + [O] Therefore , its equivalent mass will be

In alkaline medium , KMnO_(4) reacts as follows 2KMnO_(4)+2KOH rarr 2K_(2)MnO_(4)+H_(2)O+O Therefore, the equivalent mass of KMnO_(4) will be

MnO_(2)+2KOH+(1)/(2)O_(2) to K_(2)MnO_(4)+H_(2)O

MnO_(2)+2KOH+(1)/(2)O_(2) to K_(2)MnO_(4)+H(2)O

In the following reaction: x KMnO_(4)+y NH_(3) rarr KNO_(3)+MnO_(2)+KOH+H_(2)O x and y are

K_(2)MnO_(4)+H^(+) to KMnO_(4)+MnO_(2)darr

K_(2)MnO_(4)+H^(+) to KMnO_(4)+MnO_(2)darr

KMnO_(4) overset(Delta) to K_(2)MnO_(4)+MnO_(2)+O_(2)uarr

KMnO_(4) overset(Delta) to K_(2)MnO_(4)+MnO_(2)+O_(2)uarr

KMnO_(4) (m.w.=158) oxidises oxalic acid in acid medium to CO_(2) and water as follows : 5C_(2)O_(4)^(2-)+2MnO_(4)^(-)+16H^(+) to 10 CO_(2)+2Mn^(2+)+8H_(2)O What is the equivalent weigth of KMnO_(4) ?

RESONANCE ENGLISH-EQUIVALENT CONCEPT & TITRATIONS-APSP (Part-II)
  1. If the equivalent weight of an element is 32, then the percentage of o...

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  2. In alkaline solution KMnO(4) reacts as follows 2KMnO(4)+2KOH rarr 2K...

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  3. When 25 g of Na(2)SO(4) is dissolved in 10^(3)"kg" of solution. its co...

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  4. Which amongst the following has the highest normality ?

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  5. The volume of water which must be added to 0.4 dm^(3) of 0.25 N oxali...

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  6. The quantity of electricity requried to reduce 0.05 mol of MnO(4)^(-)...

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  7. You are given a solution of an alkali. In order to estimate its concen...

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  8. Normality of a '30 volume H2O2' solution is:

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  9. Hydrazine N(2)H(4) acts as a reducing agent. To prepare 100 ml of 2 N...

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  10. For the reaction shown below, which statement is true ? 2Fe+3CdCl(2...

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  11. 5H(2)C(2)O(4)(aq)+2MnO(4)(aq)+6H^(+)(aq) to 2Mn^(2+)(aq)+10CO(2)(g)+8H...

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  12. What volume of water is requried to make 0.20 N solution from 1600 mL ...

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  13. Oxalic acid, H(2)C(2)O(4), reacts with paramagnet ion according to th...

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  14. A 500 g toothpaste sample has 0.4 g fluoride concentration. The fluori...

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  15. The number of moles of KMnO(4) that will be required to react with one...

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  16. Role of hydrogen peroxide iin the following reaction is respectively. ...

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  17. A bottle of H(3)PO(4) solution contains 70% acid. If the density of th...

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  18. The unbalanced equation for the reaction of P(4)S(3) with nitrate in a...

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  19. KMnO4 reacts with oxalic acid according to the equation 2MnO4 + 5C2 O4...

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  20. 1.250 g of metal carbonate (MCO(3)) was treated with 500 mL of 0.1 M H...

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