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Edexcel Unit 5:Transition Metals and Organic Chemistry 6CH05 (15th June 2015) watch

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    The unit 5 thread for the June exam
    Feel free to post unit 5 questions, as well as discussion of the exams.
    Will update with resources when I come across them!
    Here, is the unit 4 thread:
    http://www.thestudentroom.co.uk/show...9#post54849569

    Some notes uploaded by chazatthekeys
    https://drive.google.com/folderview?...k0&usp=sharing
    And some notes uploaded by thymolphthalein!
    https://drive.google.com/folderview?...&usp=drive_web

    Chromium chemistry
    http://www.aclc.co.uk/RSSFeed/Subjec...20CHROMIUM.pdf
    Copper chemistry
    http://www.aclc.co.uk/RSSFeed/Subjec...3%20copper.pdf

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    I've got some good resources for the reactions of copper and chromium if anybody wants them? Its something they like to ask tbh its probably better if you learn the reactions! :/ that's what I've done!!
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    (Original post by bladex)
    I've got some good resources for the reactions of copper and chromium if anybody wants them? Its something they like to ask tbh its probably better if you learn the reactions! :/ that's what I've done!!
    Yeah thanks that would be amazing! Could you post them here?
    Also could you link this thread in the unit 4 thread? :3
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    Name:  ImageUploadedByStudent Room1428798930.519853.jpg
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    So, I have been trying to solve this problem using molar volumes and can't think of another way of doing it. I would really appreciate it if someone could explain why the answer is D.


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    (Original post by bladex)
    I've got some good resources for the reactions of copper and chromium if anybody wants them? Its something they like to ask tbh its probably better if you learn the reactions! :/ that's what I've done!!
    Oh, yeah. I definitely need some extra memorising on that part. You're kind to share them
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    (Original post by Wannabe007)
    Oh, yeah. I definitely need some extra memorising on that part. You're kind to share them
    Chromium

    https://www.google.co.uk/url?sa=t&so...SMDY6DxzrU9mdA

    Copper

    https://www.google.co.uk/url?sa=t&so...A4UAjUTRVqMHNQ
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    Thank you SO much ! :ahee:
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    (Original post by Wannabe007)
    Thank you SO much ! :ahee:
    No problem some of it might be too much for what we need to know but some of it is really useful
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    watching.
    A2 is very frustrating, oh my.
    Thank you though
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    hey guys...i've been trying to figure out how to solve question 23c on the june 2014 IAL unit 5 paper but I can't seem to figure it out. I tried checking the marking scheme but couldn't seem to figure out how they did it. If any of you have tried it could you please explain it to me? Thanks
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    (Original post by jshah1997)
    hey guys...i've been trying to figure out how to solve question 23c on the june 2014 IAL unit 5 paper but I can't seem to figure it out. I tried checking the marking scheme but couldn't seem to figure out how they did it. If any of you have tried it could you please explain it to me? Thanks
    I can remember not being able to do that question as well with the weird CxHy thing :/
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    These are brilliant, thank you! Do we have to learn everything on the sheets or the reactions only?
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    (Original post by daisychain_)
    These are brilliant, thank you! Do we have to learn everything on the sheets or the reactions only?
    I'm only learning the reaction pathways because that's the thing they usually ask but I've took a quick look over the other stuff but haven't properly learnt it
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    May anyone give me an example of a deprotonation reaction in the transition topic please?
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    (Original post by frozo123)
    May anyone give me an example of a deprotonation reaction in the transition topic please?
    Deprotonation reactions involve water ligands losing hydrogen ions (proton) to a proton acceptor such as an hydroxide ion.
    [Cu(H2O)6]2+ + OH-  [Cu(OH)(H2O)5]+ + H2O
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    (Original post by Ripper Phoenix)
    Deprotonation reactions involve water ligands losing hydrogen ions (proton) to a proton acceptor such as an hydroxide ion.
    [Cu(H2O)6]2+ + OH-  [Cu(OH)(H2O)5]+ + H2O
    So that is never ligand exchange? correct?
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    (Original post by frozo123)
    So that is never ligand exchange? correct?
    its partial ligand exchange not full ligand exchange
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    (Original post by Ripper Phoenix)
    its partial ligand exchange not full ligand exchange
    Why is it partial ligand exchange if it's technically not replacing the ligand but actually deprotonating it but looking like it has exchanged? or have I just answered my own question?
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    (Original post by frozo123)
    Why is it partial ligand exchange if it's technically not replacing the ligand but actually deprotonating it but looking like it has exchanged? or have I just answered my own question?
    good!! you got it..thats deprotonation haha not ligand exchange
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    Guys I have a question,

    When you react [Cu(H20)6]2+ WITH NH40H , what is the product?
    My notes say Cu(OH)2, and in excess NH4OH you get [Cu(NH3)4(H2O)2]2+.
    But why is it when you add NH3 you get [cu(OH)2(H20)4].

    Does anyone get what I am trying to ask? And understand why this occurs, and whether this is right.

    Thanks
 
 
 

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