File:DSC01974 - Zinc (II) reactions.JPG

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English: Reactions of Zinc(II)-nitrate. From left to right:

With (NH4)2S: Zn2+ - S2- -> ZnS(s) (white sulfide, here disperged in yellow (NH4)2S

With NaOH: Zn2+ + 2OH- -> Zn(OH)2; Zn(OH)2 + 2OH- <-> [Zn(OH)4]2- (The white precipitation dissolves in surplus as visible in the glass: below the clear Zn(NO3)2 solution, in the middle a ring of Zn(OH)2, above it has dissolved because of the NaOH surplus.)

With Na2CO3: Zn2+ + (CO3)2- -> white alkaline Zinc carbonate of varying composition.
Deutsch: Reaktionen mit Zink(II)nitrat. Von links nach rechts:

Mit (NH4)2S: Zn2+ - S2- -> ZnS(s) (weißes Sulfid, hier dispergiert in (NH4)2S

Mit NaOH: Zn2+ + 2OH- -> Zn(OH)2; Zn(OH)2 + 2OH- <-> [Zn(OH)4]2- (Der weiße Niederschlag löst sich im Überschuss, wie hier im Glas zu sehen: unten die klare Zn(NO3)2-Lösung, in der Mitte ein Ring von Zn(OH)2, der obenauf wegen des NaOH-Überschusses gelöst wurde.)

Mit Na2CO3: Zn2+ + (CO3)2- -> weiße alkalische Zinkcarbonate wechselnder Zusammensetzung.
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Author Tubifex

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current18:05, 21 December 2009Thumbnail for version as of 18:05, 21 December 20091,444 × 1,284 (416 KB)Tubifex (talk | contribs){{Information |Description={{en|1=Reactions of Zinc(II)-nitrate. From left to right: With (NH4)2S: Zn2+ - S2- -> ZnS(s) (white sulfide, here disperged in yellow (NH4)2S With NaOH: Zn2+ + 2OH- -> Zn(OH)2; Zn(OH)2 + 2OH- <-> [Zn(OH)4]2- (The white precipi

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