Well it clearly wasn't clear enough since other people didn't understand the word SUTURE. Anyways, if they needed to use the word stich to clarily then why use any other word to throw people off?

polar bonds can be hydrolysed and polyalkene non polar 2 marks

Reply 944

mhassen1997

Original post by SirRaza97

Was the actetate mechanism nucleophilic addition. PLEASE ANSWER

yep thats what I got :smile:

Reply 945

username2280751

Original post by AliRock

Don't need the 2.

It won't matter, in the mark scheme it'll be (2-)chloroethanoyl chloride.

Reply 946

thehollowcrown

Lol the only reason i knew what suture meant was because i watched grey's anatomy instead of revising, ironic

Reply 947

Suits101

Original post by SirRaza97

Was the actetate mechanism nucleophilic addition. PLEASE ANSWER

I said that.

Original post by FireBLue97

hydrogen bonding H2N ------ HN2CH2COOH etc.

The question said only involve the atoms involved or something, so I did:

delta plus C=O delta minus O
delta plus H-N delta minus N

Hence:

R-C=O - - - N-H2-R

Main points IMO:

Delta plus and negatives
- - - between O and N

Reply 948

6548412

Guys for distinguishing between the acyl chloride and haloalkane put ethanol and white misty fumes for acyl chloride is this right

Reply 949

lahigueraxxx

Original post by Hclarke9

Anyone get 1.2 for the salt/acid question??? Cant remember exactly what the question was asking but it was the last question on the 2nd page

I did!!!

Reply 950

mickel_w

Original post by Examguy123

http://filestore.aqa.org.uk/subjects/AQA-CHEM4-W-QP-JUN11.PDF

the difficulty of that past paper above matches that of today's paper (in my opinion at least).

for this paper you needed:
C - 56
B - 65
A - 74
A*- 83

I think the grade boundaries will match up too

I hope anyway.....

gonna need them to be a bit lower than that son :^)

Reply 951

Hclarke9

Original post by lahigueraxxx

I did!!!

Thank God!! Hopefully its right

Reply 952

AliRock

Original post by 6548412

Guys for distinguishing between the acyl chloride and haloalkane put ethanol and white misty fumes for acyl chloride is this right

It's supposed to be water, but I'm not sure whether ethanol would work or not. The observations are correct.

Reply 953

lishakb97

Original post by gcooney4

Well it clearly wasn't clear enough since other people didn't understand the word SUTURE. Anyways, if they needed to use the word stich to clarily then why use any other word to throw people off?

I agree the word suture was completely unnecessary and was probably just there to confuse people. It said stitch in brackets next to the word suture though so the question was doable still

Reply 954

cuppycake3

distillation??????? maybe

Reply 955

HannahC-H

Original post by lahigueraxxx

Anyone????

for the first yes but not the second

Reply 956

FireBLue97

Original post by Suits101

I said that.

The question said only involve the atoms involved or something, so I did:

delta plus C=O delta minus O
delta plus H-N delta minus N

Hence:

R-C=O - - - N-H2-R

Main points IMO:

Delta plus and negatives
- - - between O and N

Hydrogen bonding between O and N????????? NH OH etc.