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    (Original post by Splaffie)
    That was the easiest exam I've ever done or seen.

    Do you think they'll accept both distillation and heterogeneous cracking with a zeolite for the seperation of octane and isooctane?
    pfff if it was so easy then what did you get for the anti-bumping granule question-
    a question which is not part of the new chemistry spec
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    (Original post by abxo)
    yes i got that :d
    Did the question ask for propan-1-2-diol
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    (Original post by ICantFindMyName)
    pfff if it was so easy then what did you get for the anti-bumping granule question-
    a question which is not part of the new chemistry spec
    Gas bubbles settle around the granules preventing excessive pressure in the tube and stopping it exploding out of the top
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    What did everyone draw for the skeletal formula??
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    (Original post by AdamWallisjr)
    What was it for the H - Br question, was it Electrophillic Addition?
    yes electrophilic addition
    this question was a nice 7 marker
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    (Original post by sajanet)
    Did the question ask for propan-1-2-diol
    no the question asked for the displayed formula of the compound formed when propan-1,2-diol is heated w acidified potassium dichromate under reflux
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    (Original post by Splaffie)
    That was the easiest exam I've ever done or seen.

    Do you think they'll accept both distillation and heterogeneous cracking with a zeolite for the seperation of octane and isooctane?
    wouldnt cracking jusrt make both of thenm into smalller molecules instead of seperating then
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    What if you described the mechanism because lines were provided?
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    10.5mol^-1dm^3
    -308kJmol^-1
    1.01 x 10^25
    for the one about energy it was 118000kJ?

    Was it A for the multiple choice equilibrium question?
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    (Original post by rosemondtan)
    Guys for the propane-1,2-diol question, was the organic product formed in part a a carboxylic acid-ketone combination and for the alternative organic product it's a aldehyde-ketone combination?
    For the first part i believe it was under reflux ( the propan-1,2-diol )
    so a carboxylic acid might have formed - but i am still unsure
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    Will I lose marks for saying not putting a - in front of 308?
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    I answered the 7 mark mechanism questions in words since there were lines, do you think I'll still be able to access all the marks?
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    (Original post by XBen1999)
    Will I lose marks for saying not putting a - in front of 308?
    I'm afraid so
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    (Original post by Jamescullen2505)
    I answered the 7 mark mechanism questions in words since there were lines, do you think I'll still be able to access all the marks?
    I did that too. I assumed because the lines were provided they didn't want us to draw it...
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    (Original post by GabbytheGreek_48)
    wouldnt cracking jusrt make both of thenm into smalller molecules instead of seperating then
    Zeolites seperate branched molecules from straight chain as branched molecules cannot pass through the honeycomb structure
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    (Original post by Jamescullen2505)
    I answered the 7 mark mechanism questions in words since there were lines, do you think I'll still be able to access all the marks?
    personally i think bout drawing and descrbing will get the marks
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    (Original post by Blazey)
    I did that too. I assumed because the lines were provided they didn't want us to draw it...
    But in EVERY past paper, "outline mechanism" means drawing
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    (Original post by rosemondtan)
    It's 10.5 right?
    Yes !
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    what was the answer for he separation technique between the 2 alkanes


    i wrote simple distillation is that right
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    (Original post by XBen1999)
    Will I lose marks for saying not putting a - in front of 308?
    yup that's an infamous part of energetics. Question was 4 marks but not having the negative means 1/2 marks max i'm afraid
 
 
 
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