AQA chemistry unit 4 22nd Jan official discussion thread! Watch
ah lol same same (sorry lol..knew it had an 8 in there somwhere)
And the last two was an alcohol and butandioc acid as well i think. Hard to remeber what i put tho but thats what i think i put. If someone says what they put and i put that i'd recognize it but i don't remember what i put off the top of my head. Does that make sense???
I managed to get esters for both V and W, but people in my school are saying that one had to be a carboxylic acid. Now, I may be imagining this, but I'm positive it said ESTERS V and W are isomers of....
I put van der waals and hydrogen bonding, as I'm pretty sure there was a double bond O which would be able to bond with H.
I got Kc = 0.22, but I think I screwed up somewhere in that calculation...
I know I got the graph for k varying with time wrong, as I didn't see the question until she said pens down!
How many peaks did you get? It was weird with all those OHs
I put ethyldiamine and butandioic acid, do you think I'll get penalised for not putting numbers on? I know I will for ethyldiamine but perhaps not for butandioic acid....
The CH2 were in the same environment so they would have the same peak, OH are in the same environment regardless and CH3 were all attached to one C so same environment. That makes 3 i think. I don't remember what i got for Kc. And The spliting of CH2s in...
...-O=C-CH2-CH2-C=O-... is a slinglet isn't it? because equivalent hyrdogens don't split each other.
Stop me from going onto this thread, its making me feel worse about my exam which I thought went well!
And then singlet for the CH3 and triplet for the CH2. Anyone else get this?
And it is true that this is making us see our mistakes that we didn't see before.
I times by 0.25 instead of divided. D'uh. I feel so stupid. However it is only 2 marks.
Although i've already lost another 2. Because i put hydrogen bonding instead of dipole-dipole and i put the useful product for industry as Phenylethene, which i think is wrong. Excluding any other mistakes thatd be 86/90 but there are bound to be more mistakes.
-OHs produces one peak
-CH2s are in the same environment produce another
-CH3s are in the same environment produce another
And i got the same thing for the regeneration question and the fingerprint region.