Identify the Brønsted–Lowry acid and the Brønsted–Lowry base on the left side of each of the following equations, and also identify the conjugate acid and conjugate base of each on the right side:
(a) NH₄⁺(aq) + CN^-(aq) ⇌ HCN(aq) + NH₃(aq)
(b) (CH₃)₃N(aq) + H₂O(l) ⇌ (CH₃)₃NH⁺(aq) + OH^-(aq)
(c) HCOOH(aq) + PO₄^3-(aq) ⇌ HCOO^-(aq)+ HPO₄^2-(aq)

검증된 단계별 안내

Identify the species that donates a proton (H⁺) on the left side of the equation. This species is the Brønsted–Lowry acid.

Identify the species that accepts a proton (H⁺) on the left side of the equation. This species is the Brønsted–Lowry base.

On the right side of the equation, identify the species that results from the Brønsted–Lowry base gaining a proton. This is the conjugate acid.

On the right side of the equation, identify the species that results from the Brønsted–Lowry acid losing a proton. This is the conjugate base.

Verify that the transfer of a proton from the acid to the base is consistent with the formation of the conjugate acid and conjugate base.

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주요 개념

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Brønsted–Lowry Acid-Base Theory

The Brønsted–Lowry theory defines acids as proton donors and bases as proton acceptors. This framework allows for the identification of acid-base reactions based on the transfer of protons (H+ ions) between species. In a reaction, the substance that donates a proton is the acid, while the one that accepts it is the base.

Conjugate Acid-Base Pairs

A conjugate acid-base pair consists of two species that differ by the presence of a proton. When a Brønsted–Lowry acid donates a proton, it forms its conjugate base, and when a base accepts a proton, it forms its conjugate acid. Understanding these pairs is crucial for analyzing acid-base reactions and predicting the direction of equilibrium.

Chemical Equations and Reaction Dynamics

Chemical equations represent the reactants and products in a reaction, showing how substances interact. In the context of acid-base reactions, it is important to identify the roles of each species on both sides of the equation. This includes recognizing which species are acids, bases, conjugate acids, and conjugate bases, which helps in understanding the overall reaction dynamics.