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Capítulo 15

Ácidos e Bases

Ácidos e Bases de Bronsted-Lowry
Ácidos e Bases de Bronsted-Lowry
The acid-base reaction class has been studied for quite some time. In 1680, Robert Boyle reported traits of acid solutions that included their ability to ...
Forças de Ácidos/Bases e Constantes de Dissociação
Forças de Ácidos/Bases e Constantes de Dissociação
The relative strength of an acid or base is the extent to which it ionizes when dissolved in water. If the ionization reaction is essentially complete, ...
Água: Um Ácido e Base de Bronsted-Lowry
Água: Um Ácido e Base de Bronsted-Lowry
The reaction between a Brønsted-Lowry acid and water is called acid ionization. For example, when hydrogen fluoride dissolves in water and ionizes, ...
Escala de pH
Escala de pH
Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as ...
Forças Relativas de Pares Ácido-Base Conjugados
Forças Relativas de Pares Ácido-Base Conjugados
Brønsted-Lowry acid-base chemistry is the transfer of protons; thus, logic suggests a relation between the relative strengths of conjugate acid-base ...
Soluções de Ácidos e Bases Fortes
Soluções de Ácidos e Bases Fortes
A strong acid is a compound that dissociates completely in an aqueous solution and produces a concentration of hydronium ions equal to the initial ...
Soluções de Ácidos Fracos
Soluções de Ácidos Fracos
Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of ...
Soluções de Bases Fracas
Soluções de Bases Fracas
Some compounds produce hydroxide ions when dissolved by chemically reacting with water molecules. In all cases, these compounds react only partially and ...
Misturas de Ácidos
Misturas de Ácidos
The pH of a solution containing an acid can be determined using its acid dissociation constant and its initial concentration. If a solution contains two ...
Íons como Ácidos e Bases
Íons como Ácidos e Bases
Salts with Acidic Ions Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization ...
Determinação do pH de Soluções Salinas
Determinação do pH de Soluções Salinas
The pH of a salt solution is determined by its component anions and cations. Salts that contain pH-neutral anions and the hydronium ion-producing cations ...
Ácidos Polipróticos
Ácidos Polipróticos
Acids are classified by the number of protons per molecule that they can give up in a reaction. Acids such as HCl, HNO3, and HCN that contain one ...
Força e Estrutura Molecular de Ácidos
Força e Estrutura Molecular de Ácidos
Binary Acids and Bases In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A ...
Ácidos e Bases de Lewis
Ácidos e Bases de Lewis
In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to ...
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