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Aqueous metal ion reactions
Click an ion to animate its reaction sequence, or click its photo link. reactions photos Fe2+ Fe2+(aq) acidity reaction Click the yellow circles for each ion’s summary. Co2+ Cu2+ Cu2+(aq) acidity reaction Use the button to return to this index page. Fe3+ Fe3+(aq) acidity reaction Cr3+ Cr3+(aq) acidity reaction Use the button to return to the previous page viewed. Al3+ Al3+(aq) acidity reaction Acknowledgements
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Fe2+ iron(II) acidity reactions precipitation Add [Fe(H2O)6]2+ (aq)
green solution NaOH (aq) (little) Fe(H2O)4(OH)2 (s) NaOH (aq) (excess) acidity reactions green precipitate (turns brown in air) NH3 (aq) (little) photo NH3 (aq) (excess) FeCO3 (s) CO32- (aq) precipitation green precipitate
![Fe2+ iron(II) acidity reactions precipitation Add [Fe(H2O)6]2+ (aq)](http://slideplayer.com/slide/13293159/79/images/2/Fe2%2B+iron%28II%29+acidity+reactions+precipitation+Add+%5BFe%28H2O%296%5D2%2B+%28aq%29.jpg "green solution. NaOH (aq) (little) Fe(H2O)4(OH)2 (s) NaOH (aq) (excess) acidity reactions. green precipitate (turns brown in air) NH3 (aq) (little) photo. NH3 (aq) (excess) FeCO3 (s) CO32- (aq) precipitation. green precipitate.")
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Fe2+ iron(II) table acidity reactions precipitation Add
[Fe(H2O)6]2+ (aq) green solution acidity reactions NaOH (aq) (little) Fe(H2O)4(OH)2 (s) NaOH (aq) (excess) green precipitate (turns brown in air) NH3 (aq) (little) photo NH3 (aq) (excess) precipitation CO32- (aq) FeCO3 (s) green precipitate
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Co2+ cobalt(II) acidity reactions ligand substitution precipitation
Add [Co(H2O)6]2+ (aq) pink solution Co(H2O)4(OH)2 (s) NaOH (aq) (little) blue precipitate (turns pink slowly and then brown in air) acidity reactions NaOH (aq) (excess) NH3 (aq) (little) [Co(NH3)6]2+ (aq) ligand substitution NH3 (aq) (excess) pale-yellow solution (turns brown in air) precipitation CO32- (aq) CoCO3 (s) pink precipitate Cl- (aq) (conc) ligand substitution [CoCl4]2- (aq) blue solution
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Co2+ cobalt(II) table acidity reactions ligand substitution
Add [Co(H2O)6]2+ (aq) pink solution Co(H2O)4(OH)2 (s) NaOH (aq) (little) acidity reactions blue precipitate (turns pink slowly and then brown in air) NaOH (aq) (excess) NH3 (aq) (little) [Co(NH3)6]2+ (aq) ligand substitution NH3 (aq) (excess) pale-yellow solution (turns brown in air) CoCO3 (s) CO32- (aq) precipitation pink precipitate ligand substitution Cl- (aq) (conc) [CoCl4]2- (aq) blue solution
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Cu2+ copper(II) acidity reactions ligand substitution precipitation
Add [Cu(H2O)6]2+ (aq) blue solution NaOH (aq) (little) Cu(H2O)4(OH)2 (s) acidity reactions NaOH (aq) (excess) photo blue precipitate NH3 (aq) (little) ligand substitution [Cu(NH3)4(H2O)2]2+ (aq) NH3 (aq) (excess) deep blue solution precipitation CO32- (aq) CuCO3 (s) blue precipitate ligand substitution [CuCl4]2- (aq) green solution Cl- (aq) (conc)
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Cu2+ copper(II) table acidity reactions ligand substitution
Add [Cu(H2O)6]2+ (aq) blue solution NaOH (aq) (little) Cu(H2O)4(OH)2 (s) acidity reactions NaOH (aq) (excess) blue precipitate NH3 (aq) (little) photo ligand substitution [Cu(NH3)4(H2O)2]2+ (aq) NH3 (aq) (excess) deep blue solution CO32- (aq) CuCO3 (s) precipitation blue precipitate ligand substitution [CuCl4]2- (aq) Cl- (aq) (conc) green solution
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Fe3+ iron(III) acidity reactions acidity reaction Add
[Fe(H2O)6]3+ (aq) violet solution NaOH (aq) (little) NaOH (aq) (excess) Fe(H2O)3(OH)3 (s) acidity reactions photo NH3 (aq) (little) brown precipitate NH3 (aq) (excess) Fe(H2O)3(OH)3 (s) CO32- (aq) acidity reaction brown precipitate and colourless bubbles of CO2 (g)
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Fe3+ iron(III) table acidity reactions acidity reaction Add
[Fe(H2O)6]3+ (aq) violet solution acidity reactions NaOH (aq) (little) NaOH (aq) (excess) Fe(H2O)3(OH)3 (s) photo NH3 (aq) (little) brown precipitate NH3 (aq) (excess) acidity reaction CO32- (aq) Fe(H2O)3(OH)3 (s) brown precipitate and colourless bubbles of CO2 (g)
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Cr3+ chromium(III) acidity reactions acidity reaction
Add [Cr(H2O)6]3+ (aq) red-blue solution NaOH (aq) (little) Cr(H2O)3(OH)3 (s) acidity reactions green precipitate NH3 (aq) (little) photo acidity reaction [Cr(OH)6]3- (aq) NaOH (aq) (excess) green solution ligand substitution NH3 (aq) (excess) [Cr(NH3)6]3+ (aq) purple solution Cr(H2O)3(OH)3 (s) CO32- (aq) acidity reaction green precipitate and colourless bubbles of CO2 (g)
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Cr3+ chromium(III) table
Add [Cr(H2O)6]3+ (aq) red-blue solution NaOH (aq) (little) acidity reactions Cr(H2O)3(OH)3 (s) green precipitate NH3 (aq) (little) photo acidity reaction [Cr(OH)6]3- (aq) NaOH (aq) (excess) green solution ligand substitution [Cr(NH3)6]3+ (aq) NH3 (aq) (excess) purple solution Cr(H2O)3(OH)3 (s) acidity reaction CO32- (aq) green precipitate and colourless bubbles of CO2 (g)
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Al3+ aluminium(III) acidity reactions acidity reaction
Add [Al(H2O)6]3+ (aq) colourless solution NaOH (aq) (little) Al(H2O)3(OH)3 (s) NH3 (aq) (little) acidity reactions white precipitate NH3 (aq) (excess) photo acidity reaction [Al(H2O)2(OH)4]- (aq) NaOH (aq) (excess) colourless solution Al(H2O)3(OH)3 (s) acidity reaction CO32- (aq) white precipitate and colourless bubbles of CO2 (g)
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Al3+ aluminium(III) table
Add [Al(H2O)6]3+ (aq) colourless solution NaOH (aq) (little) acidity reactions Al(H2O)3(OH)3 (s) NH3 (aq) (little) white precipitate NH3 (aq) (excess) photo acidity reaction [Al(H2O)2(OH)4]- (aq) NaOH (aq) (excess) colourless solution acidity reaction Al(H2O)3(OH)3 (s) CO32- (aq) white precipitate and colourless bubbles of CO2 (g)
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Photographs Use the button to return to the index page
Fe2+(aq) acidity reaction Use the button to return to the index page Cu2+(aq) acidity reaction Fe3+(aq) acidity reaction Use the button to return to the previous page viewed Cr3+(aq) acidity reaction Al3+(aq) acidity reaction
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Fe2+ iron(II) photo acidity reactions [Fe(H2O)6]2+ (aq) green solution
NaOH (aq) or NH3 (aq) Fe(H2O)4(OH)2 (s) green precipitate (turns brown in air)
![Fe2+ iron(II) photo acidity reactions [Fe(H2O)6]2+ (aq) green solution](http://slideplayer.com/slide/13293159/79/images/15/Fe2%2B+iron%28II%29+photo+acidity+reactions+%5BFe%28H2O%296%5D2%2B+%28aq%29+green+solution.jpg "NaOH (aq) or NH3 (aq) Fe(H2O)4(OH)2 (s) green precipitate (turns brown in air)")
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Cu2+ copper(II) photo acidity reactions [Cu(H2O)6]2+ (aq)
blue solution NaOH (aq) or NH3 (aq) Cu(H2O)4(OH)2] (s) blue precipitate
![Cu2+ copper(II) photo acidity reactions [Cu(H2O)6]2+ (aq)](http://slideplayer.com/slide/13293159/79/images/16/Cu2%2B+copper%28II%29+photo+acidity+reactions+%5BCu%28H2O%296%5D2%2B+%28aq%29.jpg "blue solution. NaOH (aq) or NH3 (aq) Cu(H2O)4(OH)2] (s) blue precipitate.")
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Fe3+ iron(III) photo acidity reactions [Fe(H2O)6]3+ (aq)
violet solution appears orange because of hydrolysis NaOH (aq) or NH3 (aq) Fe(H2O)3(OH)3 (s) brown precipitate
![Fe3+ iron(III) photo acidity reactions [Fe(H2O)6]3+ (aq)](http://slideplayer.com/slide/13293159/79/images/17/Fe3%2B+iron%28III%29+photo+acidity+reactions+%5BFe%28H2O%296%5D3%2B+%28aq%29.jpg "violet solution. appears orange because of hydrolysis. NaOH (aq) or NH3 (aq) Fe(H2O)3(OH)3 (s) brown precipitate.")
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Cr3+ chromium(III) photos
acidity reactions [Cr(H2O)6]3+ (aq) red-blue solution appears green because of hydrolysis [Cu(OH)6]3- (aq) green solution NaOH (aq) or NH3 (aq) Cr(H2O)3(OH)3 (s) green precipitate Click for more excess NaOH (aq) Click for more …
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Al3+ aluminium(III) photo
acidity reactions [Al(H2O)2(OH)4]- (aq) colourless solution [Al(H2O)6]3+ (aq) colourless solution NaOH (aq) or NH3 (aq) Al(H2O)3(OH)3 (s) white precipitate Click for more … excess NaOH (aq) Click for more … Click for more …
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