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manganov dioksid in prebitek kalijevega permanganata določamo jodometrično v kislem in izračunamo koncentracijo oksidirajoče nečistote, izražene kot mravljična kislina.
the manganese dioxide and excess potassium permanganate are determined iodometrically in acid conditions and the concentration of oxidizable impurities calculated and expressed as formic acid.
odstotek mravljične kisline in njenih soli ter druge oksidirajoče nečistote, izražene kot mravljična kislina, je podan z: [pic],
the percentage of formic acid, formates and of other oxidizable impurities, expressed as formic acid, is given by: >pic