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    Nope you were right sodium sulphate is the drying agent
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    (Original post by zak_121)
    Nope you were right sodium sulphate is the drying agent
    What made u change ur mind? Lol


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    I read my notes
    Had sodium sulphate near to sodium chloride and my mind decided to think sodium chloride was the drying agent
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    (Original post by zak_121)
    I think it was the D because the higher priority groups were on the same side and the groups on either side with different so it had to be Z-...
    I think, correct me if I'm wrong
    Yea, it was the Z isomer I think. I think people kinda overthought this question generally. You had to see the highest priority and then from then on, knowing there were 4 different groups, it had to be the Z not the cis-trans variety which is only for the identical groups - should really take about 5 seconds from process of elimination...
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    (Original post by SolomonP)
    Yea, it was the Z isomer I think. I think people kinda overthought this question generally. You had to see the highest priority and then from then on, knowing there were 4 different groups, it had to be the Z not the cis-trans variety which is only for the identical groups - should really take about 5 seconds from process of elimination...
    But was it box A???


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    (Original post by Florent venhari)
    But was it box A???


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    I can't remember to be honest, sorry, I remeber it being C maybe? Idk tbh, whichever was the Z
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    (Original post by SolomonP)
    I can't remember to be honest, sorry, I remeber it being C maybe? Idk tbh, whichever was the Z
    Dam I put pie bond instead of sigma, ah well was a 50/50 guess and only one mark, seem to have got most the multiple choice wrong tho, what did everyone get for the Hess cycle?
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    What did anyone get for the percentage yield??? That one was annoying. It was the density that put me off 😭😭


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    (Original post by Florent venhari)
    What did anyone get for the percentage yield??? That one was annoying. It was the density that put me off 😭😭


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    39.1 i think or something near that
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    (Original post by SolomonP)
    Yea, it was the Z isomer I think. I think people kinda overthought this question generally. You had to see the highest priority and then from then on, knowing there were 4 different groups, it had to be the Z not the cis-trans variety which is only for the identical groups - should really take about 5 seconds from process of elimination...
    i got box D was this correct?
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    (Original post by Florent venhari)
    What did anyone get for the percentage yield??? That one was annoying. It was the density that put me off 😭😭


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    I got like something in the 30ish region, you had to multiply the volume by density to work out the mass of the two compounds, then find the theoretical mass of the product using n= m/mr, then just percentage yield.
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    (Original post by Beeplab)
    I got like something in the 30ish region, you had to multiply the volume by density to work out the mass of the two compounds, then find the theoretical mass of the product using n= m/mr, then just percentage yield.
    yeah i did this and got 39.1 or something like that yeah, waht did u get for hess cycle?
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    (Original post by clairebear101)
    yeah i did this and got 39.1 or something like that yeah, waht did u get for hess cycle?
    I got a positive value of 70 something, I don't know if that's right though
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    (Original post by Beeplab)
    I got a positive value of 70 something, I don't know if that's right though
    i got -77.2 which i know a few of my mates got but im not sure tbh, it was a tricky one
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    (Original post by Beeplab)
    I got a positive value of 70 something, I don't know if that's right though
    I got a positive value in the 70s too


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    (Original post by clairebear101)
    i got -77.2 which i know a few of my mates got but im not sure tbh, it was a tricky one
    I got that too
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    (Original post by zak_121)
    I got that too
    u got -77.2?? good! yes i think this is correct
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    (Original post by clairebear101)
    yeah i did this and got 39.1 or something like that yeah, waht did u get for hess cycle?
    Omg. I got 39.1 too. That was soo random though haha!! I hope it's right! ❤️


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    (Original post by Florent venhari)
    Omg. I got 39.1 too. That was soo random though haha!! I hope it's right! ❤️


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    I belive it is x well done
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    See for the Hess Law, if u did the arrows like it's a combustion cycle, then you get the minus value, but if u did it as formation, you get the positive value. If u search enthalpy of solution (because that's what it was), the cycle is similar to a formation one, so wouldn't the answer be the positive value???


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