Which of the following is the strongest acid? (a) ClO3(OH) (b) ClO2(OH) (c) SO(OH)2 (d) SO2(OH)2

Name: Problem 65, Chapter 7: Objective Chemistry for NEET Vol II
Uploaded: 2021-07-24T13:35:30-08:00
Duration: 1 min 4 s
Channel: Narayan Hari
Description: Which of the following is the strongest acid? (a) ClO3(OH) (b) ClO2(OH) (c) SO(OH)2 (d) SO2(OH)2

step 1 As we know that as we know that acidic character increases along the period and oxidation state

Which of the following is the strongest acid? (a) ClO3(OH)...

Key Concepts

Acid Strength Determination

This concept involves evaluating how easily an acid donates its proton, which is quantitatively expressed by the acid dissociation constant (Ka) or pKa value. Factors that influence acid strength include the stability of the conjugate base, the electronegativity of atoms involved, and the presence of substituents that can stabilize or destabilize the negative charge after proton donation.

Oxoacid Structure and Electron-Withdrawing Effects

Oxoacids are acids that contain oxygen atoms bound to the central atom, typically a nonmetal like sulfur or a halogen. The oxygen atoms, due to their high electronegativity, exert electron-withdrawing effects via induction. This withdrawal of electron density stabilizes the negative charge on the conjugate base, thereby increasing the acid strength.

Resonance Stabilization

Resonance stabilization refers to the delocalization of electrons across multiple atoms or bonds within a molecule. In the context of acids, if the conjugate base has the ability to distribute its negative charge over several atoms, the overall stability of the anion is enhanced. This stabilization increases the tendency of the parent acid to donate a proton, thus strengthening the acid.

Inductive Effects

Inductive effects are the transmission of charge through a chain of atoms in a molecule by the electrostatic effect of substituents. Electron-withdrawing groups attached to the acidic functional group can pull electron density away from the site of deprotonation, stabilizing the resulting anion. This effect is a key component in understanding differences in acid strengths within similar compounds.

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