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In dilute alkaline solution,MnO(4)^(-) c...

In dilute alkaline solution,`MnO_(4)^(-)` changes to:

A

`MnO_(4)^(2-)`

B

`MnO_(2)`

C

`Mn_(2)O_(3)`

D

`MnO`

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The correct Answer is:
B
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In a titration, H_(2)O_(2) is oxidised to O_(2) by MnO_(4)^(-) . 24 mL of 0.1M H_(2)O_(2) requires 16 mL of 0.1M MnO_(4)^(-) solution. Hence MnO_(4)^(-) changes to :

Assertion : cis -2- butene gives meso-2, 3-butanediol with dilute alkaline KMnO_(4) solution. Reason : Dilute alkaline KMnO_(4) solution gives trans addition with alkenes.

In the balanced equation FeS+MnO_(4)^(-)overset(H^(+))rarrFe^(3+)+SO_(4)^(2-)+Mn^(2+) the stoichiometric coefficients of FeS and MnO_(4)^(-) are in the ratio :

In an oxidation-reduction reaction, MnO_(4)^(-) ion is converted to Mn^(+2) . What is the number of equivalents of KMnO_(4) (molecular weight = 158) present in 250 mL of 0.04 M KMnO_(4) solution?

STATEMENT -1 : On dilution, molarity of solution changes. and STATEMENT -2 : Number of moles of solute in a solution does not change on dilution.

The shapes of MnO_(4)^(-) ion and the hybridization of Mn in MnO_(4)^(-) is :

Reaction of KMnO_(4) in neutral or very weakly alkaline solution can be represented as:

Which of the following will declourise alkaline KMnO_(4) solution ?

The number of electrons involved in the conversion of MnO_(4)^(-) to MnO_(2) is

H_(2) O_(2) solution (20 mL) reacts quantitatively with a solution of KMnO_(4) (20 mL) acidified with dilute H_(2) SO_(4) . The same volume of the KMnO_(4) solution is just decolourised by 10 mL of MnSO_(4) in neutral medium. simulataneously forming a dark brown precipitate of hydrated MnO_(2) . The brown precipitate is dissolved in 10 mL of 0.2 M sodium oxalate under boiling condition in the presence of dilute H_(2) SO_(4) . Write the balanced equations involved in the reactions and calculate the molarity of H_(2) O_(2) solution.

RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. KMnO(4) is the oxo salt of :

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  2. The solubility of silver bromide in hypo solution (excess) is due to ...

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  3. In dilute alkaline solution,MnO(4)^(-) changes to:

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  4. Cl(2) gas is obtained by various reactions but not by:

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  5. The developer used in photography is an alkaline solution of:

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  6. When acidified solution of K(2)Cr(2)O(7) is shaken with aqeous solutio...

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  7. Which of the following compounds is used as the starting material for ...

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  8. CrO(4) dissolves in aqueous NaOH to give :

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  9. The final product obtained for the following reaction is: KMnO(4)("ex...

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  10. The f-block of the periodic table contains those elements in which:

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  11. Among the lanthanides the one obtained by synthetic method is (a)Lu ...

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  12. The most common lanthanoid is

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  13. Across the lanthanide series,the basicity of the lanthanoide hydroxide...

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  14. Actinides

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  15. The lanthanide contraction is responsible for the fact that

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  16. Lanthanides and actinides resemble in

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  17. The seperation of lanthanoids by ion exchange method is based on

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  18. Match the salts/mixtrues listed in column(I) with their respective nam...

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  19. Thermal decomposition of K2Cr2O7 produces:

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  20. Match the compounds listed in column I with characteristics type of re...

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