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How many of the following are obtained o...

How many of the following are obtained on heating Potassium permanganate?
`K_2MnO_4, MnO_2, O_2, Mn_2O_3`

Text Solution

Verified by Experts

The correct Answer is:
`3.00`
`2 KMnO_4 overset"heat"toK_2MnO_4+MnO_2+O_2`
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Which compound amongst the following gas the highest oxidation number of Mn? KMnO_(4), K_(2)MnO_(2), MnO_(2) and Mn_(2)O_(3)

How many of the following compounds are diamagnetic and coloured? K_(2)MnO_(4), Cu_(2)Cl_(2),Hg_(2)I_(2),Ag_(2)S,HgI_(2),K_(2)CrO_(4),Cr_(2)O_(3),AgCl,Ag_(2)O,CuSO_(4),HgS,AgF,CrO_(5),Mn_(2)O_(7),MnO_(2)

Knowledge Check

  • Potassium manganate (K_2MnO_4) is formed when

    A
    Chlorine is passed through aqueous `KMnO_4` solution
    B
    Manganese dioxide is fused with potassium hydroxide in air.
    C
    Formaldehyde reacts with potassium permanganate in the presence of a strong alkali.
    D
    Potassium permanganate reacts with concentrated sulphuric acid.

  • Potassium manganate (K_2MnO_4) is formed . When:

    A
    Cuprous oxide reacts with alkaline `KMnO_4` solution
    B
    Manganese dioxide is fused with `K_2CO_3` in presence of `KNO_3`
    C
    Formaldehyde reacts with potassium permanganate in presence of concentrated potassium hydroxide solution
    D
    Potassium permanganate is heated with potassium hydroxide

  • Which of the following have maximum and minimum ionic character out of MnO, MnF_2,MnO_2, MnO_2O_7 ?

    A
    `MNO,Mn_2O_7` respectively
    B
    `MnF_2, Mn_2O_7` resectively
    C
    `MnO_2, MnO` respectively
    D
    `Mn_2O_7, MnO` respectively

    • Similar Questions

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    Out of the following, how many oxides are acidic. MnO, Mn_(2)O_(3), MnO_(2), MnO_(3), Mn_(2)O_(7) .

    Arrange the following in the decreasing order of oxidation number of Mn : (i) KMnO_4 (ii) MnO_2 (iii) Mn_2O_3 (iv) Mn (v) K_2MnO_4

    In which of the following is the oxidation state of Mn lowest? (A) MnSO_4 (B) MnO_2 (C) Mn_3O_4 (D) Mn_2O_7

    Out of the following how many oxides are acidic. MnO,Mn_2O_3,MnO_2,MnO_3,Mn_2O_7

    KMnO_(4) = K_(2) MnO_(4) + MnO_(2) + O_(2)

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