Acid cromic

L’acid cromic es un diacid de formula H2CrO4 que fòrma, après la pèrda de dos protons H+, l'ion cromat CrO42-. Sa sintèsi se fa a partir de l'oxidacion de cròme-III en cròme-VI. Dins la natura, se tròba tanben de cromats dins la crocoïta qu'es un cromat de plomb (PbCrO4). Es una substància perilhosa en causa de sa toxicitat, de sei proprietats de comburent e de son caractèr corrosiu. Es tanben un polluent dei mitans aqüatics.

Dins l'industria, es fòrça utilizat per sei proprietats oxidantas en quimia organica. En quimia analitica, pòu permetre la precipitacion de certaneis ions. A d'aplicacions mens frequentas en istologia coma fixator e en metallurgia per tractar certanei superficias.

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