Home
Class 12
CHEMISTRY
MnO(3) in an acidic medium dissociates i...

`MnO_(3)` in an acidic medium dissociates into -

A

`MnO_(2)` and `MnO_(4)^(-)`

B

MnO and `MnO_(4)^(-)`

C

`MnO_(2)` and MnO

D

`MnO_(2)` and `MnO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
In acidic solution, manganese (VI) becomes unstable and undergoes disproportionation to form manganese (VII) and manganese (IV).
`overset(VI)(5Mn)O_(3)+2H^(+)+4e rarr overset(IV)(3Mn)O_(2)+overset(VII)(2Mn)O_(4)+H_(2)O`
Promotional Banner

Topper's Solved these Questions

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS (Multiple Choice Question)|31 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS (Short Answer Type)|20 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILL (HOTS) QUESTIONS|28 Videos

  • COORDINATION COMPOUNDS OR COMPLEX COMPOUNDS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 21|2 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise PRACTICE SET 4(Answer the following questions)|14 Videos

Similar Questions

Explore conceptually related problems

K_(2)Cr_(2)O_(7) in acidic medium coverts into-

A given amount of Fe^(2+) is oxidized by x mol of MnO_4^(-) in acidic medium. The number of mole of Cr_2O_7^(2-) required to oxidize the same amount of Fe^(2+) in acidic medium is

1 mol of ferrous oxalate is oxidized by x mol of MnO_4^(-) and also 1 mol of ferrous oxalate is oxidized by y mol of MnO_4^(-) in acidic medium. The ratio (x/y) is :

A solution containing 2.68 x 10^(-3) mol of a solution containing an A^(n+) ion requires 1.61x 10^(-3) mol of MnO_4 ^(-1) for the complete oxidation of A^(n+) to AO_3^(-) in acidic medium. What is the value of n ?

Nitration of aniline in strong acidic medium also gives m-nitroaniline because-

Nitration of aniline in strong acidic medium also gives m-nitroaniline because-

When a equimolar mixture of Cu_2S and CuS is titrated with Ba(MnO_4)_2 in acidic medium, the final product contains Cu^(2+)S0_2 and Mn^(2+) . If the mol. wt. of Cu_2S,CuS and Ba(MnO_4)_2 are M_1 M_2 and M_3 respectively then:

In acidic medium CrO_(4)^(2-) is converted to :

Assertion : Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol. Reason : Addition of water in acidic medium proceeds through the formation of primary carbocation.

n-factor of Ba (MnO_4)_2 in acidic medium is :

CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -ENTRANCE QUESTION BANK
  1. Which one of the following ions exhibits d - d transition and paramagn...

    Text Solution

    |

  2. Match the metal ions given in column - I with the spin magnetic moment...

    Text Solution

    |

  3. MnO(3) in an acidic medium dissociates into -

    Text Solution

    |

  4. Which is not stable under ambient condition -

    Text Solution

    |

  5. Magnetic moment of Cr^(2+) is nearest to -

    Text Solution

    |

  6. Which of the following does not exist -

    Text Solution

    |

  7. Which of the following is most basic -

    Text Solution

    |

  8. When calomel is treated with ammonium hydroxide, a black substance is ...

    Text Solution

    |

  9. Maximum number of unpaired electrons are present in -

    Text Solution

    |

  10. Which of the following elements has lowest melting point -

    Text Solution

    |

  11. In acidic medium, KMnO(4) converts H(2)S into -

    Text Solution

    |

  12. Choose the correctly paired gaseous cation and its magnetic (spin only...

    Text Solution

    |

  13. KMnO(4) in alkaline medium changes to -

    Text Solution

    |

  14. Colour imparted by Co(II) compounds to glass is -

    Text Solution

    |

  15. Copper sulphate is dissolved in water containing for making Bordeaus ...

    Text Solution

    |

  16. Among the following, the compound that is both paramagnetic and colour...

    Text Solution

    |

  17. The colourless species is -

    Text Solution

    |

  18. Least number of oxidation states is shown by -

    Text Solution

    |

  19. Which of the following exhibits minimum number of oxidation states -

    Text Solution

    |

  20. In acidic medium, which of the following becomes colourless -

    Text Solution

    |