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    (Original post by otrivine)
    yh i got that for the final product and i wrote o2+o to give o3
    o3 reversible o2+o
    and then i got the same for final product ?
    is that acceptable
    ooo right i understand, so you didnt include the chlorine atoms at all then?
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    (Original post by MEPLUS-->YOU)
    Did anyone get CH3OH+?
    As peak?
    i did it adds up to 34 or whatever the m/z of the fragment ion was
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    (Original post by dee11)
    ooo right i understand, so you didnt include the chlorine atoms at all then?
    no i was thinking of it but no? is this wrong though
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    (Original post by superdentist)
    eurrh..dont remember , no i dont think so tbh
    im sure there was, i dont rember the question too clearly, but it required us to add the any of the radicals together to give a neutral compound/ molecule?
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    (Original post by Davo)
    i did it adds up to 34 or whatever the m/z of the fragment ion was
    Wasn't it supposed to add upto 31?
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    (Original post by Davo)
    i did it adds up to 34 or whatever the m/z of the fragment ion was
    yeah 32.
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    wasn't it CH30? to add up to 31?
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    (Original post by otrivine)
    no i was thinking of it but no? is this wrong though
    it depepnds if the question was asking how the CFC in the question depleted the ozone, cause i dont remember too clearly now. but if so, then i think you might have needed to add the chlorines
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    (Original post by andrewpeters)
    wasn't it CH30? to add up to 31?
    yeah it was 31
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    (Original post by dee11)
    it depepnds if the question was asking how the CFC in the question depleted the ozone, cause i dont remember too clearly now. but if so, then i think you might have needed to add the chlorines
    snap! i loved the mechanisms 10 easy marks?

    what did u get for the equation one for h+cl2 ?
    what did u get for the boxes calculation where we had to fill in i really got confused i got a positive value? also, for the question on HCL what happens if pressure increases i said stays same ?
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    Anyone going to post the paper?
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    Also did one of the first questions ask for the molecular formulas, or the empirical formula of cyloheane? I put the empirical formula CH2
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    (Original post by Tyles)
    how many structural isomers did that compound have at the start of the paper for 1 mark? it was either 4 or bluddy 8.?
    was that for octan..if it was then i think it was 8, but i put 9, cos i though @time, u cud sub Br with Cl :confused:
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    (Original post by otrivine)
    snap! i loved the mechanisms 10 easy marks?

    what did u get for the equation one for h+cl2 ?
    what did u get for the boxes calculation where we had to fill in i really got confused i got a positive value? also, for the question on HCL what happens if pressure increases i said stays same ?
    for the radical sub i got
    initiation:
    Cl2---> 2Cl* (does UV need to be above the arrow for this????)
    propagation:
    Cl* +h2 --> HCl +H*
    H* +Cl2 --> HCL + CL*
    Termination
    CL* +H* --> HCl (major)
    Cl + Cl --> Cl2 (minor)
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    (Original post by dee11)
    im sure there was, i dont rember the question too clearly, but it required us to add the any of the radicals together to give a neutral compound/ molecule?
    :L maybee...not to my recollection though

    what about the question about CFCS and why they are used?
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    (Original post by faz_341)
    for the radical sub i got
    initiation:
    Cl2---> 2Cl* (does UV need to be above the arrow for this????)
    propagation:
    Cl* +h2 --> HCl +H*
    H* +Cl2 --> HCL + CL*
    Termination
    CL* +H* --> HCl (major)
    Cl + Cl --> Cl2 (minor)
    thanks and for the one on depletion giving equations i put
    the formulas with o radical
    o2+o - o3
    then the one which is reversible
    then the final product is that right?
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    (Original post by Bakr212)
    I got D and I. This is going so good so far
    i'm sure it was G and H, because both where E/Z isomers of one another
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    (Original post by otrivine)
    snap! i loved the mechanisms 10 easy marks?

    what did u get for the equation one for h+cl2 ?
    what did u get for the boxes calculation where we had to fill in i really got confused i got a positive value? also, for the question on HCL what happens if pressure increases i said stays same ?
    yeah i think those mechanisms were easy also,

    HZ +CL2? Was that calculating the enthalpy ?

    the one with the boxes confused me quite abit, Im not even sure what i wrote in the end

    Increasing the pressure means the same number of mollecules occupy a smaller area, so more collisins occur. so i wrote the rate increased
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    (Original post by c_subs)
    i'm sure it was G and H, because both where E/Z isomers of one another
    :O really !
    were G and H both alkenes also? i dont remember
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    Right just to clear some things up. For the structural isomers question is was 4. As the methyl group can have a cl attached, but that's the same as 1-chloro,2-methylheptane. So it's 4. I put 5 stupidly, because I didn't think about the methyl group being the same.

    For the aldehyde/ketone, it said "Suggest a possible structure" that means you should get the mark for both.

    As for the hydrolysing. Hydrolysis is when the OH attaches, have you not done Alkaline and Acid hydrolysis of halogenoalkanes before? I put that the C-Cl and C-F bonds are too strong to be broken just by water so increased temperature and acid/base is needed to weaken the bond.

    Hydrolysis =/= dissolving sorry.
 
 
 

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