Home
Class 12
CHEMISTRY
Maleic acid and fumaric acid are two uns...

Maleic acid and fumaric acid are two unsaturated dicarboxylic acids. Which of the following statements is incorrect.

A

The boiling point of fumaric acid is greater than maleic acid

B

Dehydration product of both acids is maleic anhydride

C

Maleic acid dehydrates at lower temperature than fumaric acid

D

The `pK_(a1)` of maleic acid is greater than fumaric acid, whereas `pK_(a2)` of fumaric acid is greater than maleic acid.

Text Solution

Verified by Experts

The correct Answer is:
D
Second deprotonation of fumaric acid takes place more easily since its hydrogen atom is not involved in intramolecular hydrogen bonding. Thus, `pK_(a1)` (maleic acid) `lt pK_(a1)` (fumaric acid) but `pK_(a2)` (maleic acid) `gt pK_(a2)` (fumaric acid).
Promotional Banner

Topper's Solved these Questions

  • CARBOXYLIC ACID & THEIR DERIVATIVES

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Single Correct Answer Type)|10 Videos

  • CARBOXYLIC ACID & THEIR DERIVATIVES

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Multiple Correct Answer Type)|10 Videos

  • CARBOXYLIC ACID & THEIR DERIVATIVES

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Linked Comprehension Type)|12 Videos

  • BIOMOLECULES, POLYMERS AND CHEMISTRY IN EVERYDAY LIFE

    BRILLIANT PUBLICATION|Exercise LEVEL-II (ASSERTION-REASON TYPE QUESTIONS)|6 Videos

  • CARBOXYLIC ACIDS

    BRILLIANT PUBLICATION|Exercise LEVEL-II (Assertion -Reason)|4 Videos

Similar Questions

Explore conceptually related problems

Which of the following is an acid anhydride.

Consider the acidity of the carboxylic acids Which of the following order is correct?

Which of the following is crotonic acid?

Which of the following is not an essential amino acid

Which of the following is the strongest acid?

Which of the following is the strongest acid?

Which of the following oxide is most acidic?

BRILLIANT PUBLICATION-CARBOXYLIC ACID & THEIR DERIVATIVES-LEVEL-II
  1. Which of the following produces benzoic acid?

    Text Solution

    |

  2. Compound (A), C(8)H(9)Br, gives a white precipitate when warmed with a...

    Text Solution

    |

  3. Maleic acid and fumaric acid are two unsaturated dicarboxylic acids. W...

    Text Solution

    |

  4. In which of the following reactions, the number of carbon atoms does n...

    Text Solution

    |

  5. In a set of reactions, acetic acid gives the following product 'D'CH(3...

    Text Solution

    |

  6. (A), (B) and (C ) are three dicarboxylic acids such that: (A) overse...

    Text Solution

    |

  7. HCOOH overset("Conc."H(2)SO(4))to X+Y. Products X and Y are respective...

    Text Solution

    |

  8. CH(3)CO(2)C(2)H(5) on reaction with sodium ethoxide in ethanol gives (...

    Text Solution

    |

  9. End product of this conversion CH(3)-overset(O)overset(||)C-CH(2)-CH(2...

    Text Solution

    |

  10. When acetic acid reacts with ketene, product formed is:

    Text Solution

    |

  11. Which of the following compound would be expected to decarboxylate whe...

    Text Solution

    |

  12. , A is ?

    Text Solution

    |

  13. End product of the following sequence of reaction is:

    Text Solution

    |

  14. On subjecting mesityl oxide to the iodoform reaction, one of the produ...

    Text Solution

    |

  15. The ease of alkaline hydrolysis is more for:

    Text Solution

    |

  16. Which of the following does not form benzoic acid on oxidation with KM...

    Text Solution

    |

  17. p-Nitrobenzoic acid is a stronger acid than benzoic acid. This is due ...

    Text Solution

    |

  18. The reagents used in the reduction reactions i)CH(3)COC(6)H(4)COOH ...

    Text Solution

    |

  19. The intermediate formed when CH(3)COOH react with CH(3)CH(2)OH in pres...

    Text Solution

    |

  20. The product of the reaction shown below is,

    Text Solution

    |