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chemistry paper 42

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the thing which disappointed me is that there were no questions on electrode potential, lattice energy and electrophoresis, and i knew these topics best!!
 
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anyhow in last question related to nmr, what was the compound?
the molecular formula was C4H9OH but what was the structural formula? i wrote CH3CH2CH(OH)CH3
 
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anyhow in last question related to nmr, what was the compound?
the molecular formula was C4H9OH but what was the structural formula? i wrote CH3CH2CH(OH)CH3
Oh sorry mine was CH3CH(CH3)CH2OH

I found it very hard thoughhhh..... Expect the threshold to be around hi 40s (47-48 to be exact for A)
 
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isn't this too low? :/ i guess it would be around 65, chemistry threshold is always high..
I know.... Last year for O/N 2013 paper 4s, IIRC the threshold is around 65s.... But this is soo hard.. :( So based from the previous thresholds (and isn't the syllabus changed for this exam session?), then I guess it will be around 55-58.
 
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i s
I know.... Last year for O/N 2013 paper 4s, IIRC the threshold is around 65s.... But this is soo hard.. :( So based from the previous thresholds (and isn't the syllabus changed for this exam session?), then I guess it will be around 55-58.
eriously hope so :)
 
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Oh sorry mine was CH3CH(CH3)CH2OH

I found it very hard thoughhhh..... Expect the threshold to be around hi 40s (47-48 to be exact for A)
Yea u wrote correct structure cuz only this structure had 3 peaks and i figured this after the paper:(
 
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