Preparing a solution. Water from a wash bottle being used to top up a solution of iron (II) sulphate to the mark engraved in the neck of a volumetric

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Preparing a solution. Water from a wash bottle being used to top up a solution of iron (II) sulphate to the mark engraved in the neck of a volumetric flask. The green colour arises from the transition metal ion present here, in this case iron. The Fe ion is in its +2 (II) oxidation state, and is forming a hydrated complex ion structure with molecules of water. Iron (II) sulphate is used as a food additive and as a dye.

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Size: 4558px × 3852px
Photo credit: © MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: apparatus, aqueous, background, bottle, chemical, chemistry, crystals, diluting, education, equipment, ferrous, flask, glassware, grey, heptahydrate, iron, lab, laboratory, person, pouring, preparing, school, science, sulfate, sulphate, sulphide, topping-, volumetric, wash, water