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The colour of KMnO(4) is due to...

The colour of `KMnO_(4)` is due to

A

`sigma - sigma^(**)` transition

B

`M to L` charge transfer transition

C

d - d transition

D

`L to M` charge transfer transition

Text Solution

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The correct Answer is:
D
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Assertion . The purple colour of KMnO_(4) is due to the charge transfer transition. Reason. The intense colour of most of the transition metal complexesis due to d-d transition,.

Potassium permanganate is prepared from the mineral pyrolusite, MnO_(2) . Its crystals have deep purple colour. It acts as an oxidizing agent in the neutral, alkaline as well as acidic medium. In acidic medium , it is used in volumetric analysis for estimation of ferrous salts, oxalates etc. The titrations are carried out in presence of H_(2)SO_(4) . However ,before using itas a titrant, it is first standized with standard oxalic acid solution or Mohr salt solution. In one of the experiments on titration , 13.4 g of dry pure sodium oxalate ( molar mass =134 g mol^(-1) ) was dissolved in 100mLof distilled water and then 100 mL of 2M H_(2)SO_(4) were added. The solution, was cooled to 25.30^(@) C . Now to this solution , 0.1 M KMnO_(4) solution was added till a very faint pink colour persisted. The purple colour of KMnO_(4) is due to

Knowledge Check

  • The color of KMnO_(4) is due to :

    A
    `L to M` charge transfer transition
    B
    `sigma-sigma^(**)` transition
    C
    `M to L` charge transfer transition
    D
    `d-d` transition

  • The purple colour of KMnO_(4) is due to

    A
    Charge transfer
    B
    d-d transition
    C
    f-f transition
    D
    d-f transition

  • The color of KMnO_(4) is due to

    A
    d-d transition
    B
    L `rarr` M charge transfer transition
    C
    `sigma - sigma^(**)` transition
    D
    M `rarr` L charge transfer transition

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    Assertion: The purple colour of KMnO_4 is due to the charge transfer transition. Reason: Manganese in KMnO_4 has +7 oxidation state

    KMnO_(4) is used

    The purple colour of KMnO_4 is due to

    The purple colour of KMnO_4 is due to

    Assertion : The purple colour of KMnO_4 is due to the charge transfer transition. Reason : The intense colour in most of the transition metal complexes is due to dd transition.

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