Here the strongest acid is (a) CH3-COOH (b) CH3 CH2-COOH (c) Cl-CH2-COOH (d) Br-CH2-COOH

Name: Problem 80, Chapter 28: A Complete Resource Book in Chemistry for JEE Main
Uploaded: 2021-09-16T06:29:42-08:00
Duration: 1 min 1 s
Channel: Narayan Hari
Description: Here the strongest acid is (a) CH3-COOH (b) CH3 CH2-COOH (c) Cl-CH2-COOH (d) Br-CH2-COOH

step 1 Among the given option in this problem, among the given options in this problem, among the given

Here the strongest acid is (a) CH3-COOH (b) CH3 CH2-COOH (c)...

Here the strongest acid is
(a) $\mathrm{CH}_{3}-\mathrm{COOH}$
(b) $\mathrm{CH}_{3} \mathrm{CH}_{2}-\mathrm{COOH}$
(c) $\mathrm{Cl}-\mathrm{CH}_{2}-\mathrm{COOH}$
(d) $\mathrm{Br}-\mathrm{CH}_{2}-\mathrm{COOH}$

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Key Concepts

Inductive Effect

The inductive effect involves the transmission of electron-withdrawing or electron-donating influences through sigma bonds. When an electron-withdrawing group is attached to an acid, it stabilizes the negative charge on the conjugate base, making it easier for the acid to lose a proton, which increases the acid's strength.

Electronegativity

Electronegativity is a measure of an atom's ability to attract electrons towards itself. In acid strength, atoms with higher electronegativity positioned near the acid group can pull electron density away, resulting in a more stabilized conjugate base and, as a consequence, a stronger acid.

Acid Strength and pKa

Acid strength is determined by the ease with which a compound donates a proton, typically quantified by its pKa value. Lower pKa values indicate stronger acids because they reflect the greater stability of the conjugate base formed upon proton loss.

Structure-Acidity Relationship

The structural features of a molecule, including the nature and position of substituents, play a crucial role in determining its acidity. Changes in molecular structure can affect the electron distribution around the acidic group, thereby impacting the acid's ability to donate a proton and the overall acid strength.

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