Home
Class 12
CHEMISTRY
The correct order of reactivity of PhMgB...

The correct order of reactivity of PhMgBr with
`underset((I))(Ph-underset(C)overset(O)overset(||)(C)-Ph)" " underset((II))(CH_(3)-overset(O)overset(||)(C)-H)" " underset((III))(CH_(3)-overset(O)overset(||)(C)-CH_(3))` is

A

`I gt II gt III`

B

`III gt II gt I`

C

`II gt III gt I`

D

`I gt III gt II`

Text Solution

Verified by Experts

The correct Answer is:
C
PhMgBr reacts with a carbonyl compound and the reaction is nucleophilic addition reaction which dependes upon electrophilicity and steric crowding around carbony group. Thus `CH_(3)CHO` is most reactive and `C_(6)H_(5)COC_(6)H_(5)` is least reactive.
Promotional Banner

Topper's Solved these Questions

  • ALDEHYDES,KETONES AND CARBOXYLIC ACIDS

    MARVEL PUBLICATION|Exercise CARBOXYLIC ACIDS|198 Videos

  • ALCOHOL,PHENOLS AND ETHERS

    MARVEL PUBLICATION|Exercise Test your Grasp : Ethers|30 Videos

  • BIOMOLECULES

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|40 Videos

Similar Questions

Explore conceptually related problems

The correct order of reactivity of Ph Mg Br with underset((I))(Ph-underset(C)overset(O)overset(||)(C)-Ph)" " underset((II))(CH_(3)-overset(O)overset(||)(C)-H)" " underset((III))(CH_(3)-overset(O)overset(||)(C)-CH_(3)) is

Arrange the following in order of their reactivity toward decarboxylation reaction :- underset(I)(CH-=C overset(O)overset(||)C-OH) " "underset(II)(CH_(2)=CH-overset(O)overset(|)C-OH)" " underset(III)(CH_(3)-CH_(2)-overset(O)overset(||)C-OH) " " underset(IV)(CH_(3)-overset(CH_(3))overset(|)CH-overset(O)overset(||)C-OH)

The IUPAC name of CH_(3)-overset(OH)overset(|)underset(H)underset(|)(C)-CH_(2)-overset(O)overset(||)(C)-CH_(3) is:

The correct order of reactivity of PhMgBr with Ph - overset(O)overset(||)(C ) - Ph, " " CH_(3) - overset(O)overset(||)(C ) - H, " " CH_(3) - overset(O)overset(||)(C ) - CH_(3) " (I) ""(II) ""(III) "

Mark out the correct order of dipole moment for the following compounds : H-underset("I")overset(O)overset(||)C-H" " H_(3)C-underset("II")overset(O)overset(||)C-H" "H_(3)C-underset("III")overset(O)overset(||)C-CH_(3)

MARVEL PUBLICATION-ALDEHYDES,KETONES AND CARBOXYLIC ACIDS-CARBOXYLIC ACIDS
  1. The correct order of reactivity of PhMgBr with underset((I))(Ph-unde...

    Text Solution

    |

  2. In the case of carboxylic acids,the alpha-carbon is the carbon:

    Text Solution

    |

  3. General formula for mono-carboxylic acid is :

    Text Solution

    |

  4. Aliphatic carboxylic acid are functional isomers of

    Text Solution

    |

  5. Compound having molecular formula C(3)H(6)O(2) is:-

    Text Solution

    |

  6. Which of the following formula represent chloroethanoic acid ?

    Text Solution

    |

  7. Fatty acids are

    Text Solution

    |

  8. General formula for mono-carboxylic acid is :

    Text Solution

    |

  9. Which of the following is example of tricarboxylic acid ?

    Text Solution

    |

  10. Glacial acetic acid is the same as :

    Text Solution

    |

  11. Which of the follwong compound does not have a carboxyl group.

    Text Solution

    |

  12. Acetic acid is a weak acid because :

    Text Solution

    |

  13. Which one of the following is ethanoic acid ?

    Text Solution

    |

  14. The common name of CH(3)(CH(2))(16)COOH acid is :

    Text Solution

    |

  15. The I.U.P.A.C. name of CH(3)-CH(2)-underset(CH(3))underset(|)(C)H-CH(2...

    Text Solution

    |

  16. The I.U.P.A.C. name of lactic acid CH(3)CHOHCOOH is :

    Text Solution

    |

  17. The IUPAC name of the compound :

    Text Solution

    |

  18. Which of the following acids occur in ants ?

    Text Solution

    |

  19. Most of the carboxylic acids exists as dimer in

    Text Solution

    |

  20. Acetic acid can be separated from aqeous solution of acetic acid,at wh...

    Text Solution

    |

  21. Which of the following is isobutyric acid?

    Text Solution

    |