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Ch.16 - Acids and Bases
Tro - Chemistry: A Molecular Approach 4th Edition
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Tutti i libri di testoTro 4th EditionCh.16 - Acids and BasesProblema 35d
Capitolo 16, Problema 35d

In each reaction, identify the Brønsted–Lowry acid, the Brønsted–Lowry base, the conjugate acid, and the conjugate base. d. C5H5N(aq) + H2O(l) ⇌ C5H5NH+(aq) + OH–(aq)

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Identify the Brønsted–Lowry acid and base in the reactants: The Brønsted–Lowry acid is the species that donates a proton (H+), and the Brønsted–Lowry base is the species that accepts a proton.
In the given reaction, water (H2O) donates a proton to C5H5N, making H2O the Brønsted–Lowry acid.
C5H5N accepts a proton from H2O, making C5H5N the Brønsted–Lowry base.
Identify the conjugate acid and conjugate base in the products: The conjugate acid is the species formed when the base gains a proton, and the conjugate base is the species formed when the acid loses a proton.
C5H5NH+ is the conjugate acid formed from C5H5N, and OH- is the conjugate base formed from H2O.

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Brønsted–Lowry Acid-Base Theory

The Brønsted–Lowry theory defines acids as proton donors and bases as proton acceptors. In this framework, an acid-base reaction involves the transfer of protons (H+) from the acid to the base. This theory expands the understanding of acid-base reactions beyond just the presence of hydroxide ions, allowing for a broader range of reactions to be classified.
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Bronsted-Lowry Acid-Base Theory

Conjugate Acid and Base

In the context of Brønsted–Lowry theory, a conjugate acid is formed when a base accepts a proton, while a conjugate base is what remains after an acid donates a proton. This relationship is crucial for understanding the equilibrium of acid-base reactions, as it illustrates how substances can act as both acids and bases depending on the reaction context.
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Conjugate Acid-Base Pairs

Identifying Species in Reactions

To analyze acid-base reactions, it is essential to identify the reactants and products correctly. In the given reaction, C5H5N acts as a base by accepting a proton from water (acting as an acid), resulting in the formation of C5H5NH+ (the conjugate acid) and OH- (the conjugate base). This identification is key to understanding the roles of each species in the reaction.
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Amphoteric Species
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