单词	dichromate
释义	dichromate /dʌɪˈkrəʊmeɪt / noun Chemistry A salt, typically red or orange, containing the anion Cr2O72−: potassium dichromate... Common oxidants include the halogens (especially fluorine and chlorine), oxygen, ozone, potassium permanganate, potassium dichromate, nitric acid, and concentrated sulfuric acid. The breath sample is bubbled in one vial through a mixture of sulfuric acid, potassium dichromate, silver nitrate and water. The most regularly employed oxidizing agent for this set of reactions is a mixture called chromic acid, a mixture of sodium or potassium dichromate and sulfuric acid. Origin Mid 19th century: from di-1 'two' + chromate.
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