Chloroplatinicacid was popularlized for the determination of potassium.
Chloroplatinicacid is produced by dissolving platinum metal sponge in a 1:3 (v:v) solution of nitric acid and hydrochloric acid called aqua regia.(1) This reaction produces a mixture of chloroplatinousacid (H
The remaining chloroplatinousacid is then oxidized to choroplatinic acid by saturating a solution with chlorine and heating to remove any excess.
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