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    (Original post by otrivine)
    yes, good, and also mention the key word pharmacological active and is an anti-histamine used for treating symptoms of hay fever

    my turn
    State two reasons why the diazotisation reaction where Nitrous acid is formed insitu is carried out at 10 degrees or less

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    (Original post by ZakRob)
    State two reasons why the diazotisation reaction where Nitrous acid is formed insitu is carried out at 10 degrees or less

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    1) Is it because it exceeds activation energy as partiles gain K.E for reaction to proceed

    2) In order to form nitrous acid, the HCL and HNO2 have to react at a lesser temperature because you are making an acid and takes place at lower temp.In-situ , steam HCL is reacted and therefore has to be in an open system and it releases fume
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    (Original post by otrivine)
    1) Is it because it exceeds activation energy as partiles gain K.E for reaction to proceed

    2) In order to form nitrous acid, the HCL and HNO2 have to react at a lesser temperature because you are making an acid and takes place at lower temp.In-situ , steam HCL is reacted and therefore has to be in an open system and it releases fume
    My two reasons in mind are: nitrous acid is explosive so it's safer to operate at lower temperatures. And the Di-azonium salt breaks down at high temperatures so low temp to maintain the salt

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    (Original post by ZakRob)
    My two reasons in mind are: nitrous acid is explosive so it's safer to operate at lower temperatures. And the Di-azonium salt breaks down at high temperatures so low temp to maintain the salt

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    aRE these mark schemes answer? or you are making them? if so very nice questions.


    Ok

    Define:isoelectric point
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    (Original post by otrivine)
    aRE these mark schemes answer? or you are making them? if so very nice questions.


    Ok

    Define:isoelectric point
    Making them up, but im trying to make questions which are less common.

    The isoelectric point is a pH at which an amino acid forms a zwitterion.
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    (Original post by ZakRob)
    Making them up, but im trying to make questions which are less common.

    The isoelectric point is a pH at which an amino acid forms a zwitterion.
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    yup, do you reckon my points are reasonable?

    my turn
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    (Original post by otrivine)
    yup, do you reckon my points are reasonable?

    my turn
    Yes, what are the conditions and reagents required for the reduction of aldehydes and ketones?

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    (Original post by ZakRob)
    Yes, what are the conditions and reagents required for the reduction of aldehydes and ketones?

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    reagents= aq NaBH4
    conditions= heat
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    (Original post by otrivine)
    reagents= aq NaBH4
    conditions= heat
    Correct i'm finished for today
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    (Original post by ZakRob)
    Correct i'm finished for today
    OK, it was nice revising with you
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    For anyone struggling with NMR here are some useful resources:

    http://www.youtube.com/watch?v=k6F__pysc74

    http://www.youtube.com/watch?v=5JJ5IAlQYZs

    These are both great videos for explaining NMR and how to tackle those high mark questions - I found them really useful at least.

    I know there aren't a lot of resources out there for proton and carbon NMR in terms of practice so have attached a few files on stuff we were given in school in case anyone is interested.

    Good Luck everyone!
    Attached Images
  1. File Type: pdf C13 NMR Q.pdf (126.1 KB, 102 views)
  2. File Type: pdf NMR Worksheet.pdf (428.2 KB, 109 views)
  3. File Type: pdf NMR Test 10.pdf (438.3 KB, 121 views)
  4. File Type: pdf NMR Test 10 Mark Scheme.pdf (428.3 KB, 167 views)
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    (Original post by otrivine)
    OK, it was nice revising with you
    When will you finish learning all the modules for F324?
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    (Original post by MasterYi)
    When will you finish learning all the modules for F324?
    I finished learning, now I am revising ? you?
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    (Original post by otrivine)
    I finished learning, now I am revising ? you?
    Great that means you'll able to answer the analysis question.
    I've finished too, just revising now.
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    (Original post by MasterYi)
    Great that means you're able to any the analysis question.
    I've finished too, just revsing now.
    Yes, I did proton NMR! On thursday I am going to revise carbon 13 and next week finish off chromatography, then start past papers and do plenty of questions!


    By the way up for some recap revision
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    (Original post by otrivine)
    Yes, I did proton NMR! On thursday I am going to revise carbon 13 and next week finish off chromatography, then start past papers and do plenty of questions!


    By the way up for some recap revision
    Start Past Papers.....I really need to finish Chem 4 Mod 1/2 by the end of his week :O
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    (Original post by otrivine)
    Yes, I did proton NMR! On thursday I am going to revise carbon 13 and next week finish off chromatography, then start past papers and do plenty of questions!


    By the way up for some recap revision
    Great, how does one revise module 3. Like the chromotography and NMR data.
    What's the extent of the recap revision?
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    (Original post by MasterYi)
    Great, how does one revise module 3. Like the chromotography and NMR data.
    What's the extent of the recap revision?
    Doing all the questions at the back of the book

    Want to revise
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    (Original post by otrivine)
    Doing all the questions at the back of the book

    Want to revise
    No, sorry not now.
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    (Original post by otrivine)
    Doing all the questions at the back of the book

    Want to revise
    Throw some definitions at me to see if I can remember them off my head. I'm currently do some Maths and the Unit 1 so I won't really be able to ask questions back but if you give me a list then I'll give you my answer from memory to see if it would suffice in the exam, thanks in advance .


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