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Class 11 Chemistry Notes GOC – Bond Energy and Bond Length

by Anand Meena
April 22, 2019
in 11th Class, Class Notes
Reading Time: 2min read
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Class 11 Chemistry Notes General Organic Chemistry - AglaSem
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  • Bond energy ∝ 1/Stability of free Radical
  • Bond length ∝ Stability of free Radical
Ex.1 Compare the potential energy of the following compounds (above compounds).

Sol. If compound after being in free Radical form is very stable (i.e., less energy) it mean it would have possessed more energy initially i.e. it potential energy will be most a < b < c < d

  • Potential energy ∝ Stability of free Radical

Ex.2 Compare the bond energies of C – H bond
(At a, b, c, d, e and f position)

e > b > a > f > c = d
Stability order of free Radical that might be formed after removal of H (Homiletically) from the given carbon.
⇒e < b < a < f < c =d
(C – H bond energies)

In the above compound while comparing 2obenzylicallylic stability at two given position

While drawing the resonating structure of the

(Here in spite of Resonance three alpha (C – H) bond and are available for no bond Resonance.
Therefore extra stable than which have only two a (C – H) bond for hyper conjugation.
Therefore 2o benzylic allylic corresponding to structure (a) is more stable than that of structure (b
Ex.3 Compare the stability of the following free Radicals
Sol.

Ex.4 Compare the potential energy of CH3 – CH3, CH2 = CH2 and CH ≡CH.Sol.

After making free Radical of the above compounds:

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Tags: 11 Chemistry11 Class ChemistryCBSE 11 NotesCBSE NotesChemistry for Class 11Class 11 NotesClass 11thClass 11th NotesClass XI ChemistryFree NotesXI Class

Anand Meena

Full time entrepreneur, likes to indulge in writing reviews about the latest technologies apart from helping students in career and exam related topics.

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