Home
Class 12
CHEMISTRY
For the preparation of Alkanes, aqueous ...

For the preparation of Alkanes, aqueous solution of sodium or potassium salt of carboxylic acid ist subjected to

A

hydrogenation

B

oxidation

C

electrolysis

D

hydrolysis

Text Solution

Verified by Experts

The correct Answer is:
C

Electrolysis of aqueous solutions of sodium or potassium salts of fatty acids gives alkane having twice the number of carbon atoms present in the alkyl group of the acid. This process is known as Kolbe's electrolytic reaction.
`2RCOONa to 2RCOO^(-)+ 2Na`
at anode:
`2RCOO^(-)- 2e^(-) to 2RCOO`
`2RCOO to R-R+ 2CO_(2)`
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2015

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos
  • KARNATAKA CET 2018

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

Detergents are sodium or potassium salts of long chains of

Electrolysis of concentrated aqueous solution of an alkali salt of fatty acid gives :

Alkyl halide on heating with alcoholic solution of silver salt of a carboxylic acid gives

Electrolysis of cold conc. Aqueous solution of potassium succinate yields

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2017-CHEMISTRY
  1. Which one of the following noble gases has an unusual property of diff...

    Text Solution

    |

  2. The Van't Hoff factor (i) accounts for

    Text Solution

    |

  3. The pressure of real gases is less than that of ideal gas because of

    Text Solution

    |

  4. The reaction quotient ‘Q.’ is useful in predicting the direction of th...

    Text Solution

    |

  5. In the electrolysis of aqueous sodium chloride solution, which of the ...

    Text Solution

    |

  6. The electronegativities of C, N, Si and P are in the order of

    Text Solution

    |

  7. The correct set of quantum number for the unpaired electron of chlori...

    Text Solution

    |

  8. Complete the following equations: CH(3)-underset(CH(3))underset(|)ov...

    Text Solution

    |

  9. Which of the following is the correct electron dot structure of N(2)O ...

    Text Solution

    |

  10. Hydrogenation of vegetable oils in the presence of finely divided nick...

    Text Solution

    |

  11. The equilibrium constant for the reaction N(2)(g) + O(2) hArr 2NO(g) i...

    Text Solution

    |

  12. A reaction hos both Delta H and Delta S - ve. The rate of reaction

    Text Solution

    |

  13. Which one of the following is not a common component of photo-chemical...

    Text Solution

    |

  14. In which of the following, homolytic bond fission takes place?

    Text Solution

    |

  15. Hormones are secreted by ductless glands of human body. Iodine-contain...

    Text Solution

    |

  16. Cannizzaro.s reaction is an example of auto oxidation.

    Text Solution

    |

  17. For the preparation of Alkanes, aqueous solution of sodium or potassiu...

    Text Solution

    |

  18. The correct order of increasing basic nature for the bases NH3 CH3NH2 ...

    Text Solution

    |

  19. Bactericidal antibiotics among the following is

    Text Solution

    |

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

    Text Solution

    |