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AQA Chemistry Unit 5 - Colour change diagram, for transition metal ions. watch

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    Hi there, the book I have is really pootly laid out and we don't make any notes in class either. I have an AQA chemistry unit 5 exam next week, and was wondering if anyone could direct me to a diagram, or even share their own, for colour changes when OH-, NH3, and so on, are added to aqueous transition metal ions. I have produced a very poor one of my own, it does help, although I think it could be a lot better. Does anyone know of a good one, either on here, or on the web, suitable for the new AQA chemistry unit 5 spec? Thanks very much in advance.
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    please
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    (Original post by resortini)
    please
    You are wasting time asking for something that you could easily prepare yourself ( I believe it's called 'being bone-idle')

    You are not looking for explanation, or help with concepts, or even solving problems!

    Pick up a good text, or spend half an hour on the internet to find out the colours of all of the relevant TM ions.

    Then make your own 'diagram' or 'scheme' or whatever.

    The time taken is investment in learning, which will be of benefit to you in the long-run. :yep:
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    If you have the AQA text book, the very last page is a pretty good summary. But, if not, I had the same problem. In short form I can give you the actual colour changes and you can make a colour coded diagram or whatever

    starting with the 2+ complex ions
    [Fe(H20)6)]2+

    with OH- [Fe(h20)4(OH)2] - green gelatinous ppt
    with XS OH- [Fe(H20)(OH)2] - green gelatinous ppt
    with NH3- [Fe(H20)4(OH)2] - green gelatinous ppt
    with XS NH3- [Fe(H20)4(OH)2] - green gelatinous ppt
    with carbonate [FeCO3] - green


    [Cu(H20)6]2+

    with OH- [Cu(H20)4(OH)2] pale blue
    with XS OH- [Cu(H20)4(OH)2] pale blue
    with NH3- [Cu(H20)4(OH)2] pale blue

    with XS NH3- [Cu(NH3)4(H20)6]2+ deep blue


    [Co(H20)6]2+ pink


    with OH- [Co(H20)4(OH)2] blue
    with XS OH- [Co(H20)4(OH)2] blue
    with NH3 [Co(H20)4(OH)2] blue

    with XS NH3 [Co(NH3)6]2+ pale yellow/brown
    with carbonate [CoCo3] pink


    I'll maybe do the 3+ complex ions a little later, but good luck with learning all of them, they're killing me -__-
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    (Original post by charco)
    You are wasting time asking for something that you could easily prepare yourself ( I believe it's called 'being bone-idle')

    You are not looking for explanation, or help with concepts, or even solving problems!

    Pick up a good text, or spend half an hour on the internet to find out the colours of all of the relevant TM ions.

    Then make your own 'diagram' or 'scheme' or whatever.

    The time taken is investment in learning, which will be of benefit to you in the long-run. :yep:
    fine
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    (Original post by Mechhz0rz)
    If you have the AQA text book, the very last page is a pretty good summary. But, if not, I had the same problem. In short form I can give you the actual colour changes and you can make a colour coded diagram or whatever

    starting with the 2+ complex ions
    [Fe(H20)6)]2+

    with OH- [Fe(h20)4(OH)2] - green gelatinous ppt
    with XS OH- [Fe(H20)(OH)2] - green gelatinous ppt
    with NH3- [Fe(H20)4(OH)2] - green gelatinous ppt
    with XS NH3- [Fe(H20)4(OH)2] - green gelatinous ppt
    with carbonate [FeCO3] - green


    [Cu(H20)6]2+

    with OH- [Cu(H20)4(OH)2] pale blue
    with XS OH- [Cu(H20)4(OH)2] pale blue
    with NH3- [Cu(H20)4(OH)2] pale blue

    with XS NH3- [Cu(NH3)4(H20)6]2+ deep blue


    [Co(H20)6]2+ pink


    with OH- [Co(H20)4(OH)2] blue
    with XS OH- [Co(H20)4(OH)2] blue
    with NH3 [Co(H20)4(OH)2] blue

    with XS NH3 [Co(NH3)6]2+ pale yellow/brown
    with carbonate [CoCo3] pink


    I'll maybe do the 3+ complex ions a little later, but good luck with learning all of them, they're killing me -__-
    This is extremely usefull cud u plsss giv one for 3+complex ions???
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    (Original post by harsjan)
    This is extremely usefull cud u plsss giv one for 3+complex ions???
    yup

    [Fe(H20)6]3+ purple/yellowy brown


    with NaOH -- [Fe(H20)3(OH)3] brown gelatinous ppt ppt
    with XS NaOH -- [Fe(H20)3(OH)3] brown gelatinous ppt
    with Nh3 -- [Fe(H20)3(OH)3] brown gelatinous ppt
    with XS NH3 -- [Fe(H20)3(OH)3] brown gelatinous ppt
    with carbonate -- [Fe(H20)3(OH)3] brown gelatinous ppt
    and C02 bubbles


    [Al(H20)6]3+ colourless

    with NaOH-- [Al(H20)3(OH)3] white ppt
    with XS Naoh -- [Al(OH)4]- colourless
    with NH3 -- [Al(H20)3(OH)3] white ppt
    with XS NH3 -- [Al(H20)3(OH)3] white ppt
    with carbonate -- [Al(H20)3(OH)3] white ppt and CO2 bubbles

    [Cr(H20)6]3+ ruby

    with NaOH -- [Cr(H20)3(OH)3] green ppt
    with XS NaOH -- [Cr(OH)6]3- green sol
    with NH3 -- [Cr(H20)3(OH)3] green ppt
    with XS NH3 -- [Cr(NH3)6]3+ purple sol
    with carbonate -- [Cr(H20)3(OH)3] green ppt and cO2 bubbles



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    (Original post by Mechhz0rz)
    yup

    [Fe(H20)6]3+ purple/yellowy brown


    with NaOH -- [Fe(H20)3(OH)3] brown gelatinous ppt ppt
    with XS NaOH -- [Fe(H20)3(OH)3] brown gelatinous ppt
    with Nh3 -- [Fe(H20)3(OH)3] brown gelatinous ppt
    with XS NH3 -- [Fe(H20)3(OH)3] brown gelatinous ppt
    with carbonate -- [Fe(H20)3(OH)3] brown gelatinous ppt
    and C02 bubbles


    [Al(H20)6]3+ colourless

    with NaOH-- [Al(H20)3(OH)3] white ppt
    with XS Naoh -- [Al(OH)4]- colourless
    with NH3 -- [Al(H20)3(OH)3] white ppt
    with XS NH3 -- [Al(H20)3(OH)3] white ppt
    with carbonate -- [Al(H20)3(OH)3] white ppt and CO2 bubbles

    [Cr(H20)6]3+ ruby

    with NaOH -- [Cr(H20)3(OH)3] green ppt
    with XS NaOH -- [Cr(OH)6]3- green sol
    with NH3 -- [Cr(H20)3(OH)3] green ppt
    with XS NH3 -- [Cr(NH3)6]3+ purple sol
    with carbonate -- [Cr(H20)3(OH)3] green ppt and cO2 bubbles



    :woo:

    You are a ****ing god... xxxxxxx
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    I know i'm a bit late to the party but here's the ones we need to know for the the new AQA spec
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  1. File Type: pdf Colours.pdf (184.3 KB, 130 views)
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    (Original post by Mr Moonlight)
    I know i'm a bit late to the party but here's the ones we need to know for the the new AQA spec
    Much love x
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    (Original post by Mr Moonlight)
    I know i'm a bit late to the party but here's the ones we need to know for the the new AQA spec

    You know aqa have already made one for us? XD
    http://filestore.aqa.org.uk/resource...METAL-IONS.PDF
 
 
 
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