Home
Class 12
CHEMISTRY
When KMnO(4) solution is added to oxalic...

When `KMnO_(4)` solution is added to oxalic acid solution , the decolourisation is slow in the beginning but becomes instantaneous after some time because

A

`CO_2` is formed as the product

B

Reaction is exothermic

C

`MnO_4^-` catalyses the reaction

D

`Mn^(2+)` acts as autocatalyst

Text Solution

Verified by Experts

The correct Answer is:
D
`Mn^(2+)` acts as autocatalyst
Promotional Banner

Topper's Solved these Questions

  • D AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise NCERT FILE (EXEMPLAR PROBLEM (MULTIPLE CHOICE QUESTION TYPE -II))|10 Videos

  • D AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise NCERT FILE (EXEMPLAR PROBLEM (SHORT TYPE QUESTION))|20 Videos

  • D AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise NCERT FILE (TEXTBOOK EXERCISE)|38 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    MODERN PUBLICATION|Exercise UNIT PRACTICE TEST|13 Videos

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise UNIT PRACTICE TEST|20 Videos

Similar Questions

Explore conceptually related problems

When KMnO_(4) solution is added to hot oxalic acid solution, the decolourisation is slow in the beginning but becomes instantaneous after some time. This is because.

When KMnO_(4) solution is added to hot oxalic acid solution the decoloursitation is slow in the beginning but becomes instantaneous after some time. This is because

When KMnO_4 is added to oxalic acid, the decolourisation is slow in the beginning but becomes instantaneous after sometime because

Why is ester hydrolysis slow in the beginning and becomes faster after some time?

When hypo solution is added to KMnO_(4) solution then

When KMnO_(4) is reduced with oxalic acid in acidic solution, the oxidation number of Mn changes from

MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-NCERT FILE (EXEMPLAR PROBLEM (MULTIPLE CHOICE QUESTION TYPE -I))
  1. The electronic configurationo of Cu(II) is 3d^(9) whereas that of Cu(I...

    Text Solution

    |

  2. Metallic radii of some transition elements are given below. Wh...

    Text Solution

    |

  3. Generally transition elements from coloured salts due to the presence ...

    Text Solution

    |

  4. On addition of small amoung of KMnO(4) to concentrated H(2)SO(4), a gr...

    Text Solution

    |

  5. The magnetic nature of elements depends on the presence of unpaired el...

    Text Solution

    |

  6. Which of the following oxidation state is common for all lanthanoids?

    Text Solution

    |

  7. Which of the following reactions are disproportionation reactions ? ...

    Text Solution

    |

  8. When KMnO(4) solution is added to oxalic acid solution , the decolouri...

    Text Solution

    |

  9. There are 14 elements in actinoid series. Which of the following eleme...

    Text Solution

    |

  10. KMnO(4) acts as an oxidising agent in acidic medium. The number of mol...

    Text Solution

    |

  11. Which of the following is amphoteric oxide? Mn2O7 , CrO2 , Cr2O3, C...

    Text Solution

    |

  12. Gadolinium belongs to 4f series. It's atomic number is 64. which of th...

    Text Solution

    |

  13. Interstitial compounds are formed when small atoms are trapped inside ...

    Text Solution

    |

  14. The magnetic moment is associated with its spin angular momentum and o...

    Text Solution

    |

  15. KMnO(4) acts as on oxidising agent in alkaline medium. When alkaline K...

    Text Solution

    |

  16. Which of the following statements is not correct?

    Text Solution

    |

  17. When acidified K(2)Cr(2)O(7) solution is added to Sn^(2+) salts then S...

    Text Solution

    |

  18. Higher oxidation state of manganese in fluoride is +4 (MnF(4)) but hig...

    Text Solution

    |

  19. Although zirconium belongs to 4d transition series and hafnium to 5d t...

    Text Solution

    |

  20. Why HCl not used to make the mdeium acidic in oxidation reactions of K...

    Text Solution

    |