The endpoint of this procedure is revealed by the inflection points of a graph of its progress; substances like sulfuric acid have two such inflection points.
This procedure is used with a thiosulfate solution following the addition of manganese (II), iodide, and hydroxide, then a strong acid, in the Winkler test, and this procedure forms one step of the Kjeldahl method. One form of this procedure applied to metal ions forms chelating complexes by employing EDTA. This procedure was developed, along with the law of definite proportions, by Jeremias Richter. The endpoint of this procedure is revealed by the inflection points of a graph of its progress; substances like sulfuric acid have two such inflection points. For 10 points, name this laboratory method for determining the concentration of an unknown solution of acid or base by adding a base or acid of known concentration and recording the volume necessary for neutralization.
This procedure is used with a thiosulfate solution following the addition of manganese (II), iodide, and hydroxide, then a strong acid, in the Winkler test, and this procedure forms one step of the Kjeldahl method.
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