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Chemistry Unit 2 Edexcel, Exam- 23rd May 2012

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    (Original post by Otlichno)
    I'm doing it with the A-levels.
    Oh I see..
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    oh come on!!! i know u guys r gonna make out. i know u all r going to get A. just chill and be cool Belief matters a lot work as much hard as u can
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    Guys,
    Do we have to know about the mechanisms of nucleophilic substitution of halogenoalkane as SN1 and SN2?
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    (Original post by The_New_Guy)
    Guys,
    Do we have to know about the mechanisms of nucleophilic substitution of halogenoalkane as SN1 and SN2?
    No I don't think so. I don't think that's on the spec.
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    (Original post by shahlakh)
    oh come on!!! i know u guys r gonna make out. i know u all r going to get A. just chill and be cool Belief matters a lot work as much hard as u can
    Lol - unit 2 sucks.
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    (Original post by Arusa01)
    No I don't think so. I don't think that's on the spec.
    our teacher taught it to us anyways ... its better to learn it ....
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    (Original post by Arusa01)
    Lol - unit 2 sucks.
    what you mean? is it easy?
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    (Original post by UserInvalid)
    what you mean? is it easy?
    Some bits are ok, and then theres titrations grrr.

    Are you not doing the exam?
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    (Original post by Arusa01)
    Some bits are ok, and then theres titrations grrr.

    Are you not doing the exam?
    Yeh doing it, I am going over the book, right now I am on redox chapter, just covering things again, and I am sure by today I will have the book covered and start cracking the past papers tomorow.
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    Sn1, Sn2, and a comparison between them. i wouldnt put too much emphasis on learning them. but it wouldnt hut to take a look at them, if you have time.

    http://www.youtube.com/watch?v=3e0Sc...feature=relmfu

    http://www.youtube.com/watch?v=Z_85K...feature=relmfu

    http://www.youtube.com/watch?v=8J0ys3z5wzo
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    somebodyyyyyyy. 2012 jan pastpaper and ms. please?
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    (Original post by UserInvalid)
    Yeh doing it, I am going over the book, right now I am on redox chapter, just covering things again, and I am sure by today I will have the book covered and start cracking the past papers tomorow.
    Well good luck
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    http://www.mediafire.com/?emha8hc8xcyzo
    THE LINK TO JAN 2012 unit 2 QP AND MS
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    (Original post by Babyblue)
    somebodyyyyyyy. 2012 jan pastpaper and ms. please?
    http://www.mediafire.com/?emha8hc8xcyzo there u go
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    (Original post by afserrahuman)
    http://www.mediafire.com/?emha8hc8xcyzo
    THE LINK TO JAN 2012 unit 2 QP AND MS
    it doesn't open
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    (Original post by arusa01)
    it doesn't open :s
    yolo loooooooooool
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    (Original post by avatar 10)
    Does anyone how how to do this question-
    The enthalpy change of neutralization of an acid by an alkali is measured by adding
    10.0 cm3 of hydrochloric acid to 10.0 cm3 of sodium hydroxide. 10.0 cm3
    pipettes with an accuracy of ±0.04 cm3 are used to measure out both solutions.
    The overall percentage error in measuring the total volume of the reaction mixture is.... i keep getting +and -0.8% when its meant to be + and -0.08% :confused::confused:
    I think because you're measuring the amount in the pipette twice you're twice likely to get the error as +/-0.04 x2=+/-0.08
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    (Original post by Future Medics)
    yolo loooooooooool
    Hahaa, Missed you man x
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    (Original post by jadez_94)
    I think because you're measuring the amount in the pipette twice you're twice likely to get the error as +/-0.04 x2=+/-0.08
    0.8/10 ...
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    (Original post by Arusa01)
    Hahaa, Missed you man x
    Hahahahaha Yolo

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