Edexcel paper 2 chem unofficial mark scheme

i got 94.2% for the paracetamol question...

For the 24 DNPH I.made a silly mistake.It and assumed you know which Sample had what compounds, but then I proceed with the question the way you did.Do I lose a mark?
Were you means to say unknown Sample?

Mr was 151, remember number of moles?
was it like 3.1*10^-3

oh no.. i got 152 for molar mass... my bad Do you think I'll get elf marks or something?

Okay I have no idea what was going through my mind but for the 2,4-DNPH question I said react them with potassium dichromate to oxidise them and then mix with 2,4-DNPH - if an orange precipitate forms then it is a Kentone and if it doesn't then it was an aldehyde but has been oxidised to a carboxylic acid which doesn't form the precipitate ... is that complelty wrong?

i got 94.2% for the paracetamol question...

I got the same

oh no.. i got 152 for molar mass... my bad Do you think I'll get ecf marks or something?

https://www.google.co.uk/search?q=paracetomal+molar+mass&oq=paracetomal+molar+mass&aqs=chrome..69i57.2931j0j9&sourceid=chrome&ie=UTF-8
Paracetemols molar mass is 151, number of moles was? i cant remember

Your answer is correct, I also got 93.62%.
They either got the Mr wrong or probably forgot mg means you times by 10^-3.

Organic synthesis- conc no3, conc h2so4 goes to nitrobenzene then add tin and conc hcl to phenylamine then add ethanoyl chloride ( with no halogen carrier) to desired product
Ea was 84000 nearabouts joules, and divide for kj
mass of nitrogen was 21.97
Orders were x-1 y-2 z-0 k was 241.11
Diff proton nmr, one had 5 one had 4 intensity was like 3 to 2 to 2 to 1 and 1 to 2 to 2 to 2 to 1
find chemical shifts from data booklet and state splitting patterns
24 DNPH derivates, orange crystalline forms, recrystallise ppt, find mp using capillary tube method- compare with database of known bradys reagent derivatives
catalyst was adsrorbption, bond weakening then desrorption- explain those terms
graphie and graphene was single layer of hexagons, bond angle 120 and poor electrical conductivity was answer
reforming equation was just make cyclic and balance with hydrogen
2NO+2CO---2co2 +N2 was an answer
conc of bromine was 0.255
paracetomal percent was 93.6

what was the bromine concentration question? (I don't remember it and now i think i may have missed out an entire question)

Are you definitely sure about the proton nmr? In the new spec paper 2 there's a question on completing a nmr spectrum and it gives you the benzene hydrogens as a single peak with intensity 5... For for phenylethanal I got two peaks 5:2:1 singlet:double:triplet and for phenylethanone I got 5:3 singlet:singlet... anyone else?

In benzene they are all in the same environment, when you add a group they become in different environments as they are differnt distances from the group which affects them.

mass of nitrogen was 21.97

Was the mass of nitrogen in grams or kg?

Grams i think

Can you explain this? Not saying you're wrong I just don't know