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    (Original post by Cave Felem)
    Did nobody else say fractional distillation? The alcohol has a different boiling point to the other compounds so it should be legit right?
    I messed that question up.

    However, I agree with your answer.
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    (Original post by Suits101)
    I messed that question up.

    However, I agree with your answer.
    The boiling point isn't different enough for the alcohol to actually boil off at a different fraction without huge contamination - what they wanted is 'chromatography' I think.
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    (Original post by Cadherin)
    The boiling point isn't different enough for the alcohol to actually boil off at a different fraction without huge contamination - what they wanted is 'chromatography' I think.
    Damn I put that originally!
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    (Original post by Cadherin)
    The boiling point isn't different enough for the alcohol to actually boil off at a different fraction without huge contamination - what they wanted is 'chromatography' I think.
    They're normally both accepted on mark schemes. The industrial process of fermentation and spirit production relies on distillation of alcohol from water so it's definitely possible!
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    (Original post by Cave Felem)
    They're normally both accepted on mark schemes. The industrial process of fermentation and spirit production relies on distillation of alcohol from water so it's definitely possible!
    Exactly this.

    I originally put chromatography to be on the safe side and then completely changed it.

    I was stuck between (fractional) distillation, chromatography and reflux - why did I go mad and put reflux!?
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    (Original post by Suits101)
    Exactly this.

    I originally put chromatography to be on the safe side and then completely changed it.

    I was stuck between (fractional) distillation, chromatography and reflux - why did I go mad and put reflux!?
    I said heat the alcohol and distill off the product ? Is that correct?
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    (Original post by SubwayLover1)
    I said heat the alcohol and distill off the product ? Is that correct?
    What was the answer? Fractional distillation?

    Posted from TSR Mobile
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    (Original post by SubwayLover1)
    I said heat the alcohol and distill off the product ? Is that correct?
    I believe that's for an aldehyde?
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    (Original post by Suits101)
    Exactly this.

    I originally put chromatography to be on the safe side and then completely changed it.

    I was stuck between (fractional) distillation, chromatography and reflux - why did I go mad and put reflux!?
    I'm more interested as to why you thought refluc would seperate anything xD
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    (Original post by Suits101)
    I believe that's for an aldehyde?
    but you had a ketone and an ionic salt - so you can still distill off a ketone because of different boiling points
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    (Original post by SirRaza97)
    I'm more interested as to why you thought refluc would seperate anything xD
    I was hoping it'd separate the alcohol! :L

    I've never been good at these practical technique apparatus thingies!
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    (Original post by SubwayLover1)
    but you had a ketone and an ionic salt - so you can still distill off a ketone because of different boiling points
    I can't remember it now! You might be right.

    I thought you had a sodium ethanoate and alcohol?
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    (Original post by blueberry389)
    does anyone have the paper?
    You gotta be kidding me
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    (Original post by Suits101)
    I can't remember it now! You might be right.

    I thought you had a sodium ethanoate and alcohol?
    yeye Sodium ethanoate has ionic bonding between (O- and Na+) so if you heated it ... surely you would be able to distill off the alcohol ?
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    (Original post by badaman)
    What was the answer? Fractional distillation?

    Posted from TSR Mobile
    I put chromatography because fractional distillation isn't on the unit 4 spec but...oh wait, half this paper had nothing much to do with our spec anyways -_-

    Fractional distillation should be fine.
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    (Original post by SubwayLover1)
    yeye Sodium ethanoate has ionic bonding between (O- and Na+) so if you heated it ... surely you would be able to distill off the alcohol ?
    I'm going to be honest I don't know.

    It was only one mark so I'm trying to not worry about it but if what you said is true then I suppose so!
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    (Original post by Suits101)
    I'm going to be honest I don't know.

    It was only one mark so I'm trying to not worry about it but if what you said is true then I suppose so!
    Sorry pahah! I need an A* in chem so I am stressing D: !
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    (Original post by Suits101)
    That's exactly right
    Can it be HCl and not H2SO4
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    What would 45/100 be lol
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    Anyone have an unofficial mark scheme?
 
 
 
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