Entrar

Chapter 5

Complexometric Titration, Precipitation Titration, and Gravimetry

Titulação Complexométrica: Visão Geral
Titulação Complexométrica: Visão Geral
Complexometric titrations involve reactions of ligands with suitable metal ions to generate metal–ligand complexes. The titration is often performed ...
Titulação Complexométrica: Ligantes
Titulação Complexométrica: Ligantes
Complexation titrations may employ different monodentate or polydentate ligands. Polydentate ligands, such as derivatives of amino carboxylic acids, ...
Propriedades dos compostos organometálicos
Propriedades dos compostos organometálicos
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl ...
EDTA: Química e Propriedades
EDTA: Química e Propriedades
In complexation reactions, although ligands of various denticities can be used, polydentate ligands are generally preferred, as they form highly stable ...
EDTA: Constante de Formação Condicional
EDTA: Constante de Formação Condicional
Recall that EDTA exists in various forms depending on the pH of the solution. Among the different forms, the fully unprotonated species is thought of as ...
EDTA: Reagentes Complexos Auxiliares
EDTA: Reagentes Complexos Auxiliares
EDTA titrations require high-pH conditions, under which the active complexing form of EDTA predominates. However, under alkaline conditions, many metal ...
EDTA: Titulação direta, traseira e de deslocamento
EDTA: Titulação direta, traseira e de deslocamento
EDTA titration includes direct, back, displacement, indirect, and alkalimetric titration. In a direct titration, a metal ion solution is directly titrated ...
EDTA: Titulação indireta e alcalina
EDTA: Titulação indireta e alcalina
Like direct, back, and displacement titration, indirect titration is an EDTA titration involving metal ions. In an indirect titration, anions are ...
Curvas de titulação de EDTA complexométricas
Curvas de titulação de EDTA complexométricas
An EDTA titration curve plots the metal ion concentration as the p function against the EDTA volume. Before the equivalence point, the free metal ion is ...
Efeitos do EDTA nos métodos de detecção de ponto final
Efeitos do EDTA nos métodos de detecção de ponto final
End-point detection in EDTA titration includes visual and instrumental methods. A visual metal-ion indicator, which forms a stable complex with a metal ...
Agentes de mascaramento e desmascaramento
Agentes de mascaramento e desmascaramento
The selectivity of EDTA reactions is improved by masking and demasking agents. A masking agent chelates with a potential interfering ion to form a more ...
Titulação de precipitação: visão geral
Titulação de precipitação: visão geral
In precipitation titrations, the analyte mixed with visual indicators reacts with the titrant to form a colored precipitate or a soluble, colored complex ...
Curva de Titulação de Precipitação: Análise
Curva de Titulação de Precipitação: Análise
In the titration of chloride with silver nitrate, the initial silver ion concentration is low due to the limited redissolution of the sparingly soluble ...
Titulação de precipitação: métodos de detecção de endpoint
Titulação de precipitação: métodos de detecção de endpoint
In argentometric precipitation titrations, visual detection of the endpoint is possible by the Mohr, Volhard, and Fajans methods. In the Mohr method for ...
Gravimetria: Visão Geral
Gravimetria: Visão Geral
Gravimetry is a quantitative analytical method where the analyte is isolated and weighed either directly or after conversion into a substance of known ...
Gravimetria: Agentes Precipitantes Inorgânicos e Orgânicos
Gravimetria: Agentes Precipitantes Inorgânicos e Orgânicos
Common inorganic precipitants yield insoluble precipitates that can be used to quantify several cations and anions. The formation of precipitates such as ...
Gravimetria de precipitação
Gravimetria de precipitação
In precipitation gravimetry, the analyte reacts with a precipitant to yield a precipitate that is isolated and weighed. The precipitate should be of low ...
Formação de precipitados e controle de tamanho de partícula
Formação de precipitados e controle de tamanho de partícula
In precipitation gravimetry, ideally, the precipitant reacts specifically or selectively with the analyte to yield a precipitate with certain attributes. ...
Processos de precipitação
Processos de precipitação
Slow addition of the precipitant in a dilute solution with constant stirring lowers the solute concentration, that is, Q, decreasing the relative ...
Precipitados coloidais
Precipitados coloidais
Colloidal precipitates have a large surface-to-mass ratio that encourages surface adsorption. For example, colloidal silver chloride obtained by adding ...
Tipos de coprecipitação
Tipos de coprecipitação
Coprecipitation is the contamination of a precipitate by otherwise soluble species and occurs via different processes. Surface adsorption can introduce ...
Lavagem, secagem e ignição de precipitados
Lavagem, secagem e ignição de precipitados
Following filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as ...
JoVE Logo

Privacidade

Termos de uso

Políticas

Pesquisa

Educação

SOBRE A JoVE

Copyright © 2025 MyJoVE Corporation. Todos os direitos reservados