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Chapitre 5

Acides et bases

Acides et bases de Brønsted-Lowry
Acides et bases de Brønsted-Lowry
In 1923, the Brønsted–Lowry definition of acids and bases was proposed by Johannes Brønsted and Thomas Lowry. According to this theory, a ...
Acides et bases de Lewis
Acides et bases de Lewis
This lesson delves into Lewis acids and bases in the context of the octet rule for electron-deficient compounds. Here, the concept is discussed, ...
Acides et bases : <em> K</em><sub> a</sub>, p<em> K</em><sub> a</sub>, et forces relatives
Acides et bases : K a, p K a, et forces relatives
This lesson delves into a critical aspect of the relative strengths of acids and bases. The strength of an acid is evaluated by the acid dissociation into ...
Position d'équilibre dans les réactions acide-base
Position d'équilibre dans les réactions acide-base
In any solution, the value of pKa indicates whether an acid is completely dissociated or not. A negative pKa corresponds to a stronger acid, whereas a ...
Structure moléculaire et acidité
Structure moléculaire et acidité
An acid can be deprotonated to form a conjugate base or an anion. If the produced anion is more stable, then the acid is stronger. On the contrary, if the ...
Effet nivelant et solutions acides-bases non aqueuses
Effet nivelant et solutions acides-bases non aqueuses
This lesson defines the leveling effect in acidic and basic solutions and its role in aqueous and non-aqueous solutions. It is essential to understand the ...
Effets de solvatation
Effets de solvatation
An understanding of the solvating effect helps rationalize the relation between solvation and acidity of the compound. In addition, this also explains the ...
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