Dichromates

(also bichromates), salts of dichromic acid, H₂Cr₂O₇—for example, K₂Cr₂O₇. Most dichromates are orange-red. Usually they are more soluble than the corresponding chromates (salts of chromic acid, H₂CrO₄). Like chromates, dichromates are strong oxidizing agents in acid solution (hexavalent Cr is reduced to the trivalent state—for example, K₂Cr₂O₇ + 14HCl = 2KC1 + 2CrCl₃ + 3C1₂ + 7H₂O). A mixture of equal parts of a cold saturated solution of K₂Cr₂O₇ and concentrated H₂SO₄ (chromic mixture) has a very strong oxidizing action; it is used in the laboratory for cleaning chemical dishware.

单词	dichromates
释义	DictionarySeedichromate Dichromates Dichromates (also bichromates), salts of dichromic acid, H₂Cr₂O₇—for example, K₂Cr₂O₇. Most dichromates are orange-red. Usually they are more soluble than the corresponding chromates (salts of chromic acid, H₂CrO₄). Like chromates, dichromates are strong oxidizing agents in acid solution (hexavalent Cr is reduced to the trivalent state—for example, K₂Cr₂O₇ + 14HCl = 2KC1 + 2CrCl₃ + 3C1₂ + 7H₂O). A mixture of equal parts of a cold saturated solution of K₂Cr₂O₇ and concentrated H₂SO₄ (chromic mixture) has a very strong oxidizing action; it is used in the laboratory for cleaning chemical dishware.
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