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Edexcel A2 Chemistry 6ch04/05 JUNE 2015

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Original post by Chazatthekeys
Ignoring? ='D
Yeah 2 ! Oh right, there's only 1 A2 chemistry class and it had 14 people in it lol - that's big on average.

We finished the whole syllabus like in the 4th term in March lol

We had to self-teach chromatography and entropy for like half-term work lol we did all the organic at the beginning - embed that first since there's more aha


I see! We're a class of 21 this year, which explains why my teacher is struggling this year since there usually are no more than 7 people taking A2 chem.

Btw since you seem so prepared for chem - any little details that you feel could come up? (I have only read a revision guide so I'm scared I've missed quite a bit)

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Reply 2121
That was so easy!!
Original post by Buses
That was so easy!!


No.
That was much nicer than chem 4 for me.

Hopefully should amount to an A overall :smile:


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What was that paper :frown:
Did anyone get the Vo2+ to v2+ question?Literally couldn't do it :frown:
& what'd you get on the enthalpy cyclohexane/benzene/ etc diagram one???
Really struggled on this paper, think there was way more room for lots of small marks to be dropped
Original post by LibertyB96
Did anyone get the Vo2+ to v2+ question?Literally couldn't do it :frown:
& what'd you get on the enthalpy cyclohexane/benzene/ etc diagram one???
Really struggled on this paper, think there was way more room for lots of small marks to be dropped


Spent sooooooo long in that question ahaha but yeh got there in the end.


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Original post by Wahid1
Spent sooooooo long in that question ahaha but yeh got there in the end.


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Did you get 92.2% for the purity?I couldn't do the 1 mark half equation bit at the start, nor the 1 mark "what is Z" at the end.Answered most things, just hard to know whether i'm completely wrong or not
Original post by LibertyB96
Did you get 92.2% for the purity?I couldn't do the 1 mark half equation bit at the start, nor the 1 mark "what is Z" at the end.Answered most things, just hard to know whether i'm completely wrong or not


92.2 indeed


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96.4%
Who else couldn't do the chromium question?
What did people get for the very last question about low res nmr and mass spec?
Original post by LunaLovegood14
What did people get for the very last question about low res nmr and mass spec?


Three peaks in ratio 4:4:1
and mass peak at "insert value here calculated from Molecular formula"
Original post by LibertyB96
Three peaks in ratio 4:4:1
and mass peak at "insert value here calculated from Molecular formula"

I got 5 peaks 2:2:2:2:1, as the molecule was not symmetrical
Original post by jonnycope7
I got 5 peaks 2:2:2:2:1, as the molecule was not symmetrical


Definitely 5 peaks but didn't bother with splitting pattern because protons on benzene ring do something special that I can't quite remember but I didn't they think they split following the conventional n+1 rule of thumb


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Original post by ojstratton
Definitely 5 peaks but didn't bother with splitting pattern because protons on benzene ring do something special that I can't quite remember but I didn't they think they split following the conventional n+1 rule of thumb


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It was was not benzene it was a cyclohexene with 3 double bonds
It was low resolution nmr, so no splitting patterns!
Original post by chemvic
It was low resolution nmr, so no splitting patterns!


Yep 5 peaks ! GUYS TALK ABOUT 6CH05 ON THE 6CH05 thread
What would 67/90 be on the unit 4 paper?

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