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    (Original post by otrivine)
    want to revise
    yeah ... I am worried though because loads of people on here have retook so many times and still havnt got A
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    (Original post by Gulzar)
    yeah ... I am worried though because loads of people on here have retook so many times and still havnt got A
    Dont worry! Just key thing about this unit is to just be careful with the connectivity and learn mechanism and reagent, do lots of questions and revise! better start revising ASAP!

    ok

    What do you understand by the process of 'transesterification' and describe (3)
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    (Original post by Gulzar)
    Does everone know what they need to get an A/B in A2 chemistry?
    Yea, need 39 for a B and 99 for an A, trying really hard to get the A* though as I've worked extremely hard over the past 2 years and I would be really gutted if I miss out on it.
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    (Original post by D4rth)
    Yea, need 39 for a B and 99 for an A, trying really hard to get the A* though as I've worked extremely hard over the past 2 years and I would be really gutted if I miss out on it.
    Me too
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    (Original post by otrivine)
    Hey how is F324 going.
    Yea it's going ok, quite enjoying it but I'm not going to revise till Easter, if I start too early I'll just get bored. Mostly it is quite simpler, a lot more so than F325, just a lot more to learn.
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    (Original post by D4rth)
    Yea it's going ok, quite enjoying it but I'm not going to revise till Easter, if I start too early I'll just get bored. Mostly it is quite simpler, a lot more so than F325, just a lot more to learn.
    Yes, true, I have to say these exam board take so long to give me my paper back

    Want to revise a bit on F324
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    (Original post by otrivine)
    Dont worry! Just key thing about this unit is to just be careful with the connectivity and learn mechanism and reagent, do lots of questions and revise! better start revising ASAP!

    ok

    What do you understand by the process of 'transesterification' and describe (3)
    Wait...which one is that one?
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    (Original post by Gulzar)
    Wait...which one is that one?
    It is in chapter 1 , ill give you a clue , something to do with Biodesiel
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    (Original post by otrivine)
    It is in chapter 1 , ill give you a clue , something to do with Biodesiel
    I remember glycerol and something is used to make the biofuel
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    I've almost finished covering F324 now
    Just finishing up on Spectroscopy and such.
    I will be done before Easter.
    I'm sitting this for the first time and resitting F325 and F322
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    (Original post by Alotties)
    I've almost finished covering F324 now
    Just finishing up on Spectroscopy and such.
    I will be done before Easter.
    I'm sitting this for the first time and resitting F325 and F322
    Good Luck , I am sure you will do well

    Want to revise F324 for a bit/
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    Talk to me about azo dyes!
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    (Original post by otrivine)
    It is in chapter 1 , ill give you a clue , something to do with Biodesiel
    Why does bromine react more readily with phenol than benzene?
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    (Original post by Gulzar)
    I remember glycerol and something is used to make the biofuel
    yes , you are getting there.

    Its literally got to do with the fact that , this is the process in which Bio diesel is made and is where a triglyceride reacts with methanol or ethanol in the presence of either sodium or potassium hydroxide catalyst forming biodisel and glycerol.

    But good for saying that glycerol is formed cause you would get some marks.

    My turn
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    (Original post by otrivine)
    yes , you are getting there.

    Its literally got to do with the fact that , this is the process in which Bio diesel is made and is where a triglyceride reacts with methanol or ethanol in the presence of either sodium or potassium hydroxide catalyst forming biodisel and glycerol.

    But good for saying that glycerol is formed cause you would get some marks.

    My turn
    Why does bromine react more readily with phenol than benzene?
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    (Original post by kevloui)
    Talk to me about azo dyes!
    My friend , nice to see you again !!!


    Azo dyes !

    Firstly, the process of making aromatic amines are that a nitrobenzene has to react with a mixture of concentrated HCL(aq) and Sn and the process has to be done under reflux for phenylamine to be made.

    Then there are two reactions , Diazotisation and coupling reaction.
    In dizotisation , this is where the nitrous acid is reacted with phenyl amine and with concentrated HCL to form the diazonium ion.HNO2 is made in reaction mixture in-situ and reaction is kept <10 degrees.

    couping reaction is where the diazonium ion is reacted with an alkaline so is under alkaline conditions and forms the azo dye which is a brighly coloured compound/
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    (Original post by Gulzar)
    Why does bromine react more readily with phenol than benzene?

    Can you ask me from carobxylic acid all the way to chapter 2.
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    (Original post by otrivine)
    Good Luck , I am sure you will do well

    Want to revise F324 for a bit/
    I'm just doing some maths work but I might revise with you later
    I need to do well, my grades so far are B (F321), D (F322), A (F323), E (F325) which makes a D overall and I need a B overall to go to uni
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    (Original post by otrivine)
    Can you ask me from carobxylic acid all the way to chapter 2.
    Sure thing (have u not revised the first bit? )

    What is a zwitter ion and explain the isolectric point of an amino acid?
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    (Original post by otrivine)
    My friend , nice to see you again !!!


    Azo dyes !

    Firstly, the process of making aromatic amines are that a nitrobenzene has to react with a mixture of concentrated HCL(aq) and Sn and the process has to be done under reflux for phenylamine to be made.

    Then there are two reactions , Diazotisation and coupling reaction.
    In dizotisation , this is where the nitrous acid is reacted with phenyl amine and with concentrated HCL to form the diazonium ion.HNO2 is made in reaction mixture in-situ and reaction is kept <10 degrees.

    couping reaction is where the diazonium ion is reacted with an alkaline so is under alkaline conditions and forms the azo dye which is a brighly coloured compound/
    Yea thats great! I havent covered the whole module yet, so I dont know about MMR and stuff, but anything before.
 
 
 
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