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Class 11 Chemistry Notes GOC – Ortho Effect

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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The ortho substituted aniline are less basic than aniline and ortho substituted benzoic acids are more acidic than benzoic acid.

 Ortho effect is valid only for benzoic acid and aniline.
 

Ex.1 Compare the basic strength of the following:

Sol. a > b > d > c

* Due to ortho effect d > c
If c is less basic than d then it will be certainly less than b as b is more basic than d.

Ex.2 Compare the basic strength of the following:

Sol. Do your selves

S.I.PSteric inhibition of Protonation (ortho effect)

After protonation, repulsion increases therefore ortho substituted aniline is less basic than aniline S.I.RSteric inhibition of resonance

 

Therefore a > b (basic character)

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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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