The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

AQA CHEM4 discussion/unofficial mark scheme

Scroll to see replies

Original post by ahsan_ijaz
ii think it mentioned apart from heat - sorry about it and wondering and i think you needed dilute naoh



I'm pretty sure apart from heat was mentioned in part b not a though
Original post by shiney101
I'm pretty sure apart from heat was mentioned in part b not a though


hm yeah i put dilute naoh reflux - chromotography bt i think its distillation now
https://www.facebook.com/groups/148389988911787/
Heres a page to complain to AQA
Original post by logicmaryam
hey guys im updating the answers as i go along. please let me know if you know the order or marks or answers haha


orders were 1 and 2 respectively
Reply 84
Avatar for your dad
your dad
make a ms then mate
Reply 85
Avatar for meeshah
meeshah
1
Absolutely disgusting, AQA yet again proving that any amount of revision is not worth it because we're probably going to fail anyway
Original post by Bailey2j09


Complaining isn't going to do anything, what's been done has been done
Is GL chromatography wrong?
When others have complained it makes the exam board realise how hard it was and then they take that into consideration when making the grade boundaries
Reply 89
Avatar for stump-y
stump-y
2
Original post by ahsan_ijaz
hm yeah i put dilute naoh reflux - chromotography bt i think its distillation now


I put chromatography too :smile: I think it should work because it's such a versatile separation technique.

Forgot the heat under reflux though.
wouldnt q1) products have been Ch3COO- and H30+??
Original post by stump-y
I put chromatography too :smile: I think it should work because it's such a versatile separation technique.

Forgot the heat under reflux though.

deffo needed dilute naoh and reflux
Reply 92
Avatar for stump-y
stump-y
2
Original post by ahsan_ijaz
deffo needed dilute naoh and reflux


One mark less for me then :smile: Hopefully the grade boundaries will be lower than last year.
How many C peaks were there?
Original post by iselhong
your equation is not balanced…


Is it not? There's a positive charge on CH3CO+
Original post by penguinpenny
Is it not? There's a positive charge on CH3CO+

HNO3 +CH3COOH = CH3COO+ + H2O + NO3-
there is a extra O in product side
I got that omg!!!!!
Reply 97
Avatar for Anerror
Anerror
Question 9 wasn't it 6 carbons?
Original post by RedNebula
I think it's CH3 O C(CH3)2 CH2CH2 OH
Anybody else get this?...

Posted from TSR Mobile


CH3 O C(CH3)2 CH2CH2 OH
That's exactly what quite a few of us got!
Reply 99
Avatar for arsan
arsan
C6H1402

61% Carbon

11.9% Hydrogen

27.1% Oxygen (100-11.9-61)

what was that question, that's as much as I can remember!!

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you