Precipitates of transition metal salts

Precipitates of transition metal salts

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This image is part of the sequence Science and technology: Transition metal solutions

Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Coloured precipitates of transition metal salts. Left to right: Precipitate of cobalt II salt in sodium hydroxide solution. Precipitate of Iron II salt in sodium hydroxide solution. Precipitate of iron III salt in sodium hydroxide solution. Precipitate of copper II salt in sodium hydroxide solution. The colour of the precipitates is used to identify if an unknown substance contains traces of a metal. This can be used in forensic science.

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Keywords: alkali, blue, brown, chemical, chemistry, cloudy, cobalt ii, copper ii, experiment, iron ii, iron iii, no-one, nobody, opaque, precipitate, precipitation, reaction, salts, school science, science education, sodium hydroxide, solution, test, test tube, transition metal, white background

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