File:DSC01976 - Calcium (II) reactions.JPG
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Summary[edit]
DescriptionDSC01976 - Calcium (II) reactions.JPG |
English: Reactions of Calcium(II)-nitrate. From left to right:
With Na2CO3: Ca2+ + (CO3)2- -> CaCO3(s) (white precipitation of chalk) With NaOH: the slight milky shade probably is because of side reactions; perhaps CO2 from air -> chalk. With H2SO4: Ca2+ + (SO4)2- -> CaSO4(s) (white precipitation of gypsum)Deutsch: Reaktionen mit Calcium(II)nitrat. Von links nach rechts:
Mit Na2CO3: Ca2+ + (CO3)2- -> CaCO3(s) (weißer Kalk-Niederschlag) Mit NaOH: die leicht milchige Trübung stammt vermutlich aus Nebenreaktionen durch Verschmutzung; eventuell CO2 aus der Luft -> Kalk. Mit H2SO4: Ca2+ + (SO4)2- -> CaSO4(s) (weißer Gips-Niederschlag) |
Date | |
Source | Own work |
Author | Tubifex |
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:41, 21 December 2009 | 1,296 × 1,453 (488 KB) | Tubifex (talk | contribs) | {{Information |Description={{en|1=Reactions of Calcium(II)-nitrate. From left to right: With Na2CO3: Ca2+ + (CO3)2- -> CaCO3(s) (white precipitation of chalk) With NaOH: the slight milky shade probably is because of side reactions; perhaps CO2 from air |
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Metadata
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Camera manufacturer | Sony Ericsson |
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Camera model | K800i |
Exposure time | 1/15 sec (0.066666666666667) |
F-number | f/2.8 |
ISO speed rating | 200 |
Date and time of data generation | 13:53, 14 December 2009 |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 15:24, 21 December 2009 |
Y and C positioning | Co-sited |
Exif version | 2.2 |
Date and time of digitizing | 13:53, 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 |