File:DSC01974 - Zinc (II) reactions.JPG
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Summary
[edit]DescriptionDSC01974 - Zinc (II) reactions.JPG |
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. |
Date | |
Source | Own work |
Author | Tubifex |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:05, 21 December 2009 | 1,444 × 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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Camera manufacturer | Sony Ericsson |
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Camera model | K800i |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/2.8 |
ISO speed rating | 200 |
Date and time of data generation | 13:17, 14 December 2009 |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 15:22, 21 December 2009 |
Y and C positioning | Co-sited |
Exif version | 2.2 |
Date and time of digitizing | 13:17, 14 December 2009 |
APEX exposure bias | 0 |
Metering mode | Center weighted average |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Scene capture type | Standard |
Subject distance range | Macro |