File:DSC01964 - Copper reactions.JPG

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English: Reactions of copper nitrate (the solution is bright turquoise). From left to right:

Cu(NO3)2 + 2KI -> 2KNO3 + CuI(s) (it's a white solid; here in a yellow iodine solution)

Cu(NO3)2 + (NH4)2S -| (nothing happened; the yellow color is because of the (NH4)2S.)

Cu(NO3)2 + H2S -> CuS(s) + 2HNO3 (black CuS)

Cu(NO3)2 + 2NaOH -> Cu(OH)2(s) + 2NaNO3 (First there's a bright blueish flakey solid ...)
Cu(OH)2 + 2NaOH -> [Na2Cu(OH)4] ( ... but in surplus it complexates and a blue solution remains.)

Cu(NH3)2 + 2NH3 + 2H2O -> Cu(OH)2 + 2NH4+
Cu(OH)2 + 4NH3 -> [Cu(NH3)4]2+ (The complex with ammonia dissolves to a blue liquid, too)

Cu(NO3)2 + Na2CO3 --> CuCO3(s) + 2NaNO3 (This green solid was completely dissolved in a Na2CO3 surplus.)
Deutsch: Reaktionen mit Kupfernitrat (als Lösung; ganz leicht türkise Farbe). Von links nach rechts:

Cu(NO3)2 + 2KI -> 2KNO3 + CuI(s) (es ist ein weißer Niederschlag, hier schwimmt er in gelber iodhaltiger Lösung)

Cu(NO3)2 + (NH4)2S -| (keine Reaktion; die gelbe Farbe ist vom (NH4)2S.)

Cu(NO3)2 + H2S -> CuS(s) + 2HNO3 (schwarzer Niederschlag von CuS)

Cu(NO3)2 + 2NaOH -> Cu(OH)2(s) + 2NaNO3 (Zuerst sieht man einen Niederschlag des blauen Kupferhydroxids ...)
Cu(OH)2 + 2NaOH -> [Na2Cu(OH)4] ( ... aber im Überschuss komplexiert es und ergibt eine blaue Lösung.)

Cu(NH3)2 + 2NH3 + 2H2O -> Cu(OH)2 + 2NH4+
Cu(OH)2 + 4NH3 -> [Cu(NH3)4]2+ (Auch der Ammoniak-Komplex ergibt eine blaue Lösung.)

Cu(NO3)2 + Na2CO3 --> CuCO3(s) + 2NaNO3 (Der grüne Niederschlag löste sich in einem Soda-Überschuss komplett.)
Italiano: Alcune reazioni alle quali partecipa il nitrato rameico. Da sinistra a destra:

1) Cu(NO3)2 + 2KI → 2KNO3 + CuI(s) (generalmente bianco opaco; in questo caso è in una soluzione di iodio gialla)

2) Cu(NO3)2 + (NH4)2S (non si hanno reazioni; il colore è cambiato per la presenza di (NH4)2S.)

3) Cu(NO3)2 + H2S → CuS(s) + 2HNO3 (colore nero dovuto a CuS)

4a) Cu(NO3)2 + 2NaOH → Cu(OH)2(s) + 2NaNO3

4b) Cu(OH)2 + 2NaOH → [Na2Cu(OH)4] (colore blu)

5a) Cu(NH3)2 + 2NH3 + 2H2O → Cu(OH)2 + 2NH4+

5b) Cu(OH)2 + 4NH3 → [Cu(NH3)4]2+ (colore blu)

6) Cu(NO3)2 + Na2CO3 → CuCO3(s) + 2NaNO3 (solido verde disciolto in Na2CO3 in eccesso)
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Author Tubifex

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current11:23, 21 December 2009Thumbnail for version as of 11:23, 21 December 20091,360 × 1,536 (629 KB)Tubifex (talk | contribs){{Information |Description={{en|1=Reactions of copper nitrate (the solution is bright turquoise). From left to right: Cu(NO3)2 + 2KI -> 2KNO3 + CuI(s) (it's a white solid; here in a yellow iodine solution) Cu(NO3)2 + (NH4)2S -| (nothing happened; t

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