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    (Original post by Rid123)
    Question 2 calculations:
    -316
    351
    People get these?
    Yes think so
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    (Original post by Rid123)
    Question 2 calculations:
    -316
    351
    People get these?
    i got thos numbers but i got +316
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    Guys how many marks was question 9
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    (Original post by I like cows)
    Yes think so
    I got -316 yes
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    what does aqueous barium chloride and magnesium nitrate form and what is the observation
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    (Original post by arronpile)
    what does aqueous barium chloride and magnesium nitrate form and what is the observation
    I think it forms barium nitrate but it's soluble so there's no visible observations. I didn't phrase it so well in the exam though
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    (Original post by Rid123)
    Question 2 calculations:
    -316
    351
    People get these?
    Yeah I got exactly that
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    (Original post by ManOfJustTin)
    I think it forms barium nitrate but it's soluble so there's no visible observations. I didn't phrase it so well in the exam though
    yh i put that it was colourless
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    (Original post by arronpile)
    what does aqueous barium chloride and magnesium nitrate form and what is the observation
    All nitrates are soluble so no visible change. For the other one, white barium sulfate precipitates out
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    The question to work out enthalpy of combustion when given a combustion equation and formation data. Was is products minus reactants or reactants minus products?
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    on the mechanism question where you hade to do mechanism of the formation of the reactive intermediate was it where h2so4 joined to the 2nd carbocation in propene
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    (Original post by Lucasium)
    The question to work out enthalpy of combustion when given a combustion equation and formation data. Was is products minus reactants or reactants minus products?
    products minus reactants
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    Products - reactants
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    I hope flames and precipitate are sufficient bur i somehow doubt it
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    What did you guys get for the question which asked what the peak at 1620-1680 cm-1 was becuase that was for a c=c bond but whay was the reagent ? I wrote KOH ?
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    (Original post by Lucasium)
    The question to work out enthalpy of combustion when given a combustion equation and formation data. Was is products minus reactants or reactants minus products?
    It was combustion data, so isn't that reactants-products??


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    (Original post by samim_s)
    What did you guys get for the question which asked what the peak at 1620-1680 cm-1 was becuase that was for a c=c bond but whay was the reagent ? I wrote KOH ?
    I think that's correct
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    (Original post by emsieMC)
    Yeah I got exactly that
    Yup got them too!
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    (Original post by samim_s)
    What did you guys get for the question which asked what the peak at 1620-1680 cm-1 was becuase that was for a c=c bond but whay was the reagent ? I wrote KOH ?
    wasnt it conc h2so4 because its going from an alcohol to a alkene and the condition for this was reflux
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    For the pair of serioisomers of C5H10, i was confused and i put the E,Z isomers for pent-2-ene, is that correct if not what was it does anyone know?
 
 
 
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