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单词 Plumbous chromate
释义

Plumbous chromate

中文百科

铬酸铅 Lead(II) chromate

(重定向自Plumbous chromate)
 Lead(II)chromate, historical dye collection of the Technical University of Dresden, Germany

铬酸铅(俗称铬黄),化学式PbCrO4。常温时为黄色粉末,可用作黄色颜或是涂于马路上的分隔线。

将铬酸钾加于铅盐可以制成铬酸铅。它的反应式是:

这一反应常用来鉴定Pb或 CrO4。它可在氢氧化钠溶液中溶解:

故可用来区别其他黄色的难溶铬酸盐(如BaCrO4)。

英语百科

Lead(II) chromate 铬酸铅

(重定向自Plumbous chromate)
 Lead(II) chromate, historical dye collection of the Technical University of Dresden, Germany

Lead(II) chromate (PbCrO4) is a chemical compound, a chromate of lead. It has a vivid yellow color and is practically insoluble in water, and as a result, is used in paints under the name chrome yellow. It is commonly made in the laboratory by reacting a lead(II) salt (such as lead(II) nitrate) with a chromate or dichromate salt (such as potassium chromate or potassium dichromate) in solution in water, producing a very deep yellow to orange precipitate of lead(II) chromate.

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更新时间:2025/6/20 13:24:35