Stručni rad
https://doi.org/10.15255/KUI.2015.041
Chemistry in Teaching
Prussian Blue as a Classroom Experiment
Petra Kalinovčić
; Braće Domany 6, 10 000 Zagreb
Maja Raos Melis
; HUDU, Hrvatska udruga digitalnih umjetnika, Sveti duh 22, 10 000 Zagreb
Nenad Raos (ur.)
Sažetak
This paper describes a classroom experiment aiming to prepare Prussian blue by the reaction of iron(III) chloride and potassium hexacyanoferrate(II) or, alternatively, ammonium iron(II) sulphate and potassium hexacyanoferrate(III) in Petri dishes. The unusual crystal structure of Prussian blue, i.e. iron(III) hexacyanoferrate(II), is discussed along with the short explanation of the origin of its colour, by the charge transfer via cyanide ions. There is also a short history of its discovery (H. Diesbach, 1704), as well as its role in art history (Van der Werff, Watteau, Cézanne, Van Gogh, Hokusai).
Ključne riječi
chemistry education; pigments; history of chemistry; art history
Hrčak ID:
148526
URI
Datum izdavanja:
20.11.2015.
Posjeta: 2.882 *