Roni posted an Question
August 16, 2020 • 18:28 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Please solve my question and please give proper reason

please solve my question and please give proper reason

3 Answer(s) Answer Now
  • 0 Likes
  • 5 Comments
  • 0 Shares
  • Suman Kumar Best Answer

    More the unsaturation more will be the heat of hydrogenation.

    eduncle-logo-app

    Cyclohexene has one double bond, and its heat of hydrogenation is -120 kJ/mol. Benzene has three double bonds, so we might expect its heat of hydrogenation to be -360 kJ/mol.

    eduncle-logo-app

    However, its measured heat of hydrogenation is only -208 kJ/mol. Benzene is more stable than expected by 152 kJ/mol. This difference is called its resonance energy.

    eduncle-logo-app

    So order will be ii>iii>i

    eduncle-logo-app

    https://www.google.com/url?sa=t&source=web&rct=j&url=https://chemistry.stackexchange.com/questions/108726/why-total-heat-of-hydrogenation-of-1-3-cyclohexadiene-is-more-than-that-of-benze&ved=2ahUKEwiu5pXkmp_rAhVwzTgGHZKACqwQFjADegQIBhAB&usg=AOvVaw0EWDDsBrr9D0ewKajt-C0a

    eduncle-logo-app

    Complete details with data in this link

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers