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第5章

錯滴定、沈殿滴定、重量測定

コンプレックス滴定:概要
コンプレックス滴定:概要
Complexometric titrations involve reactions of ligands with suitable metal ions to generate metal–ligand complexes. The titration is often performed ...
錯滴定:リガンド
錯滴定:リガンド
Complexation titrations may employ different monodentate or polydentate ligands. Polydentate ligands, such as derivatives of amino carboxylic acids, ...
有機金属化合物の性質
有機金属化合物の性質
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl ...
EDTA:化学と特性
EDTA:化学と特性
In complexation reactions, although ligands of various denticities can be used, polydentate ligands are generally preferred, as they form highly stable ...
EDTA:条件付き形成定数
EDTA:条件付き形成定数
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:補助錯体試薬
EDTA:補助錯体試薬
EDTA titrations require high-pH conditions, under which the active complexing form of EDTA predominates. However, under alkaline conditions, many metal ...
EDTA:直接滴定、背部滴定、変位滴定
EDTA:直接滴定、背部滴定、変位滴定
EDTA titration includes direct, back, displacement, indirect, and alkalimetric titration. In a direct titration, a metal ion solution is directly titrated ...
EDTA:間接滴定およびアルカリ滴定
EDTA:間接滴定およびアルカリ滴定
Like direct, back, and displacement titration, indirect titration is an EDTA titration involving metal ions. In an indirect titration, anions are ...
コンプレックスメトリーEDTA滴定曲線
コンプレックスメトリーEDTA滴定曲線
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 ...
エンドポイント検出法におけるEDTAの影響
エンドポイント検出法におけるEDTAの影響
End-point detection in EDTA titration includes visual and instrumental methods. A visual metal-ion indicator, which forms a stable complex with a metal ...
マスキングおよびマスキング解除エージェント
マスキングおよびマスキング解除エージェント
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 ...
降水滴定:概要
降水滴定:概要
In precipitation titrations, the analyte mixed with visual indicators reacts with the titrant to form a colored precipitate or a soluble, colored complex ...
降水滴定曲線:分析
降水滴定曲線:分析
In the titration of chloride with silver nitrate, the initial silver ion concentration is low due to the limited redissolution of the sparingly soluble ...
沈殿滴定:エンドポイント検出法
沈殿滴定:エンドポイント検出法
In argentometric precipitation titrations, visual detection of the endpoint is possible by the Mohr, Volhard, and Fajans methods. In the Mohr method for ...
重量測定:概要
重量測定:概要
Gravimetry is a quantitative analytical method where the analyte is isolated and weighed either directly or after conversion into a substance of known ...
重量測定:無機および有機沈殿剤
重量測定:無機および有機沈殿剤
Common inorganic precipitants yield insoluble precipitates that can be used to quantify several cations and anions. The formation of precipitates such as ...
降水量重量計
降水量重量計
In precipitation gravimetry, the analyte reacts with a precipitant to yield a precipitate that is isolated and weighed. The precipitate should be of low ...
沈殿物の形成と粒度制御
沈殿物の形成と粒度制御
In precipitation gravimetry, ideally, the precipitant reacts specifically or selectively with the analyte to yield a precipitate with certain attributes. ...
降水プロセス
降水プロセス
Slow addition of the precipitant in a dilute solution with constant stirring lowers the solute concentration, that is, Q, decreasing the relative ...
コロイド状沈殿物
コロイド状沈殿物
Colloidal precipitates have a large surface-to-mass ratio that encourages surface adsorption. For example, colloidal silver chloride obtained by adding ...
共沈の種類
共沈の種類
Coprecipitation is the contamination of a precipitate by otherwise soluble species and occurs via different processes. Surface adsorption can introduce ...
沈殿物の洗浄、乾燥、および着火
沈殿物の洗浄、乾燥、および着火
Following filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as ...
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