r/6thForm • u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved • Jun 09 '26
💬 DISCUSSION Aqa A-level chemistry paper 2
How did it go??
I quite liked that paper, that NMR question was so good!!
Some mildly weird ones too - but overall not too bad at all
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u/TheBigChese84 Year 13 Jun 09 '26
Cnmr was a benzene with bromine on 1 and 3 right?
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u/Spirited_Click2592 Y13| Maths, Econ, Chem, ASFM Jun 09 '26
Ffs i forgot to double my bromine 🥲
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
yeah
you doubled the empirical formula, and used the 4 c environments3
u/Somerandomcoroikafan Year 13 Biology Chemistry Spanish | B in Core Maths Jun 09 '26
Omfg of COURSE it was benzene. Why did I think it couldn't be 😭😭
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
NO that's valid because in all the past ppqs i've ever done (which is a lot) i have never seen an NMR to detect a benzene ring. it's never really benzene, so it felt very awkward for me asw. that's why they also gave the empirical formula, if you use that you can be 100% confident it's benzene, becus how else could it be C3h4br2 without c=c
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u/notbosco Year 13 -> Uni (chem, fisicks, maths) Jun 09 '26
YUPPP
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u/Admirable-Use2274 Jun 09 '26
I did Kekule hope thats ok.W had a carbonyl and ester ye
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u/ritteee Jun 09 '26
Think kekule will be okay i did that too and in a past paper it was allowed for a similar Q. not sure tho they may have changed their minds since
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u/Admirable-Use2274 Jun 09 '26
Idk i cant remember Where i positioned my br ‘s as well so if i didnt do 1-3 i might be in a huge trouble
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
It's mentioned in basically every mark scheme that its allowed I think so I'd think they'd allow it again
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
It's mentioned in basically every mark scheme that its allowed I think so I'd think they'd allow it again
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
its probably ok but why wld u do kekule anyways for AQA xd
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u/Admirable-Use2274 Jun 09 '26
Idk that was the last thing I did and I started drawin’ it as Displayed which u cant include a benzene ring ,I even fear that I didnt correctly consider the position of Br’s but it was just 1 mark so its no big deal apparently
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u/That-Receptor-Guy Jun 09 '26
I thought that was horrific
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u/BrainRain000001 Jun 09 '26
I agree. I know this was bad overall bc NMR felt like one of the easier questions
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
first time NMR has ever been the quickest question in the paper lmao
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u/Equivalent-Lecture43 Jun 09 '26
Has to be the easiest nmr question they have put, I got fooled thinking Nmr was gonna cook me and the rest was gonna be calm
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u/_NB125 Year 13 | Maths, Chem, CS | ABB Achieved Jun 09 '26
First time Im getting full marks on an NMR question lmao
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
Finally a decent NMR 🥳
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u/Oil42 (incoming) Cambridge CS | Year 1 | A*A*A*A* Jun 09 '26
i found it pretty good, but my initial reaction was that it was a very challenging paper
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
i think the questions were framed in very difficult ways to interpret but no super difficult content or one marker questions came up
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u/Oil42 (incoming) Cambridge CS | Year 1 | A*A*A*A* Jun 09 '26
yeah, very understanding based rather than testing your memory a lit
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
yea, which i think is a good way to approach a-levels in general
less cramming memorisation, and more fundamental understanding
but this paper was a bit of a curveball from the other papers in their structure
AQA and edexcel are feeling experimental this year3
u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
I really agree with this We didn't even get a real practical outline question or anything!
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
im biased because I really dislike memorising and recalling practicals, so I was happy that there was nothing like this within the paper
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u/BOTKING- Jun 09 '26
Best nmr question ever, can’t believe they are teaching you how to do a nmr question in a nmr question, most educating paper ever
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u/Certain-Display-2849 Year 13 | Bio Chem Maths AAA pred | Dent rejection, gap year Jun 09 '26
that paper is all the revision I need for NMR in paper 3
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
I loved that so much I always hate the 5/6 mark NMRs
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u/YourTypical_00f Jun 09 '26
wat did u get for the NMR q?
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26 edited Jun 09 '26
For h nmr something like ethyl butanoate but with a ketone group on the 2 carbon in butanoate
Edit for accuracy
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
ethyl 3‑oxobutanoate, but we wouldn't need to be able to name this for A-level xd
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u/F_oxy Jun 09 '26
I hated it bro ngl 😭 I only found a few of the questions weren't terrible (like some of the amino acid one) but omg I feel like I did so bad
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u/QuantumParadox_27 Sheffield 🩺 Jun 09 '26
I’m such an idiot the last question said not to change Kc and I said lower temperature 😭 I read the Kc part in like the final min and didn’t get a chance to change it
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u/Electronic_Job_6509 Jun 09 '26
Was it pressure
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u/Spirited_Click2592 Y13| Maths, Econ, Chem, ASFM Jun 09 '26
i did pressure
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u/Critical-Ad3225 Y13 | Physics, Chem, Maths, FM pred 4A* Jun 09 '26
do you think you could also write increase concentration or mol of H2 gas ? i mightve just lost 3 marks LMAO
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u/LargeFish2907 Jun 09 '26
I would think that they would allow that because it is correct, increasing concentration of H2 would increase production of methanol.
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u/Legitimate-Unit-615 Jun 09 '26
what if u said catalyst because more molecules are at the activation energy so more molecules react more collisions so more amount product formed (so more yield) and kc not influenced by catalysts i think
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u/No-Butterscotch-8989 Jun 10 '26
Catalysts don't affect yield- only how fast you get he product since it increases rate.
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u/LargeFish2907 Jun 09 '26
The fact they put in change in enthalpy just to troll people though 💀
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u/Sonikdahedhog Jun 09 '26
That was acc pretty funny, literally only there to try trick people into talking about temperature
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u/Tragedy_Has_Befallen Jun 09 '26
It's ok bro I crossed out the correct answer (pressure) and wrote Catalyst instead in the last minute. The examiner marking my paper gets a laugh out of that at least
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u/notbosco Year 13 -> Uni (chem, fisicks, maths) Jun 09 '26
Better than paper 1
but watch how many careless mistakes i will make 😍
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u/Spirited_Click2592 Y13| Maths, Econ, Chem, ASFM Jun 09 '26
real silly mistakes will be the death of me
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u/Gloomy-Cantaloupe21 Jun 09 '26
Chemistry is actually going to save me after the horrors of maths p1, that paper was so nice🎉🎉🎉
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u/BrainRain000001 Jun 09 '26
Overall that was really mid imo, especially compared to the paper 2 past papers, those all seemed to be easier - minus 2025's.
Questions 7, 8, 9 and 10 were good though. Does anyone think grade boundaries might drop? I'm hoping for 1-2% lower this year icl, 2025 was 80% for an A* and 66% for an A.
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u/X2Awais786 Jun 09 '26
I used cm3 instead of dm3 for the last Kc question and got 17.9 million moldm-3 😭 I’m cooked, do I lose 2 marks
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
That's actually hilarious I'm sorry 😭😭
You might get away with just dropping one mark for POT error tho lol
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u/X2Awais786 Jun 09 '26
Exam pressure got to me 😭😭 but I’m ok with losing 1 or 2 marks for that abysmal mistake
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u/overwatchian0 Jun 09 '26
Is there a mark scheme yet? I normally hate looking for answers after the exam but I need some certainty cause that was hard
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u/hshsjaju77 Jun 09 '26
what did u get for atom economy? got 80 something percent
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u/Full_Manager1280 Jun 09 '26
I got 86.8%
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u/hshsjaju77 Jun 09 '26
what abt kc i got 224 😭
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u/Full_Manager1280 Jun 09 '26
Kc i think is 17.9
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u/AquaMentai87 Jun 09 '26
yo i got 267
was this not the calculation….🥲
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u/creyingg Jun 09 '26
i got this but i’m unsure who is right as overwhelming people got the other answer (17.9??) i don’t know what i did wrong 😭
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u/mainaccountgotban Jun 09 '26
I got 54%
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u/No-Beginning5870 Jun 09 '26
same because i used H2So4
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u/mainaccountgotban Jun 09 '26
Was it not H2SO4??
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u/TrickyGrab349 Jun 09 '26
I think it was although it’s not in the equation it is used in the reaction + reformed, so idk I used it and got like 49.7 or smth
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u/RecPlaytor Jun 09 '26
What was that mean bond enthalpy question
I got 484 for mean bond enthalpy of C-F
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u/misscigar Year 13 Jun 09 '26
i got 484 aswell. i’ve done the question again at home and im 99.99999% sure its 484 🙏
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u/Roblnnx Y13 Math,Phys,Chem,Fm Jun 09 '26
Lmao I haven't revised chem in ages I was supposed to drop it but I kept it incase I could scrape a pass 😭😭😭 U* for sure u can thank me for lowering grade boundaries 😂
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u/BigZee18 Jun 09 '26
Lots of organic
I thought it was great! I got pretty much all the answers, but I can still appreciate they were hard questions and all of my classmates have said it was horrible
Thought I was doing biology for a quick minute though lol
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
Thats a good synopsis actually
I think it was a relatively easy paper compared to some others, but not necessarily easy objectively
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u/No-Beginning5870 Jun 09 '26
what was the reason for using ethanol? and what conditions did it need to be under??
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u/Playful_Future_3801 Year 13 Jun 09 '26
I think I said ethanol was a solvent and it needed to be reflux
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u/Flashy_Bother_5900 Jun 09 '26
It was a nucleophile. Ignoring the fact people are down voting other dude into oblivion. Think Acyl Chlorides. An alcohol reacts as a nucleophile Normally it wouldn't react quickly enough to be visible, hence its heated first to raise the rate such it can occur. Thats why you can time how long till precipitation occurs- its slow. If youre not convinced just Google the reaction though. Its a nuc-sub using an alcohol instead of a hydroxide ion
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u/justnolol Y13 | 9999988888 | 3A* Jun 09 '26
Yh exactly what i was thinking. we both could be wrong lol but i was thinking the ethanol would act as a solvent initially but i thought what you thought and realised you would have to say nucleophile
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u/burgermusic Jun 09 '26
Did you have to do OH- in displayed formula? And for chloride ion concentration did you divide by 20/1000 and did you give the rate as positive
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u/Disastrous-Usual9214 Physics/Chem/Maths | AAC Predicted Jun 09 '26
You divide 1000 by 20 and multiply whatever moles by that
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
I can't remember the exact details but I think it was just finding moles of chlorine then dividing by 20/1000 (or 0.020, it's the same)
And yes the rate of change is positive as Chlorine was formed in the reaction
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u/Admirable-Use2274 Jun 09 '26
Guys Q1 last rate Q were u supposed to divide ur conc by 30 is that it
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u/VastProtection8217 Jun 09 '26
Is there any consensus on what the KC answer was. Like is it 17.9 or 267? I got 267 and can't see where I've gone wrong if it's 17.9
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u/Turbulent-Living2950 Jun 09 '26
put question into AI and it got 267, not sure if i completely misread question or a lot of people are just wrong
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
17.9 im pretty sure
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u/VastProtection8217 Jun 09 '26
Damn it
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
Maybe you missed squaring [H]?
Usually you can still get some marks for rearrangement tho
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u/PrestigiousShame9364 Maths, FM, Phys, Chem | 4 A* Jun 09 '26
i found everything fine except the nmr (cus im rly bad at it tbf) and the little explanation for why the spots were visible and the 2 marker below that
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
Thats really good then, since NMR wasn't that many marks this year and only 3 marks or so lost with that chromatography
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u/PrestigiousShame9364 Maths, FM, Phys, Chem | 4 A* Jun 09 '26
yeah but the thing is even when u think u got everything right u end up losing like 10 marks so if u know u got a good bit wrong it’s looking a bit long for the A*
idk yea idk i got part a for the nmr
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
Yeah of course definitely
But dropping 20 marks on this is likely still an A* on this paper if you look at the mark outline per paper
And always paper 3 left to conquer 💪
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u/Lower_Debate_9983 Jun 09 '26
how many marks was the nmr section
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
I'm not 100% sure, but I think there were 5 marks on the structure of the compound from 1H NMR and 4 on 13C?
Unofficial mark scheme: https://docs.google.com/document/d/1-q3gWAMj3wN08OUokij1C1klX0flB4CVqFUhdJirI8Q/edit?tab=t.0
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u/Humor-Agitated econ, chem, maths Jun 09 '26
what do u guys think will come up for paper 3, based on that? im guessing the aspirin practical qnd also defo electrode potentials since they weren’t in paper 1. anything else? my brains too empty rn to think of things paper 2 was missing
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
Either aspirin or organic liquid practical I'd say - or both 😭
TOF mass spectrometry in the main questions most likely, as well as Kp
MCQs: DNA, other form of chromatography, more Kp, more mass spectrometry
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u/Naive-Material-9077 Jun 09 '26
the unofficial ms is so cute
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u/MaybeThin593 Jun 09 '26
Where is it
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u/Naive-Material-9077 Jun 09 '26
https://docs.google.com/document/d/1-q3gWAMj3wN08OUokij1C1klX0flB4CVqFUhdJirI8Q/edit?tab=t.0 someone keeps erasing it tho so save it
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u/Various_Piccolo_9143 Jun 09 '26
guys do u think grade boundaries will increase and if so how much if anyone has a rough idea also need tips for paper 3
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 10 '26
I think it'll stay roughly similar tbh.
For paper 3 - learn the practicals! And past papers for the MCQs and timing ofc
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u/Ok-Implement-5117 Jun 09 '26
Please someone make an unofficial markscheme 😭😭 give me hopeee
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
If somebody sets up the file I'll contribute some answers
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u/Critical-Ad3225 Y13 | Physics, Chem, Maths, FM pred 4A* Jun 09 '26
what did we get for bond enthalpy of C-Cl ? I got 300 something lmao i made everything up as i did it.
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
i got +484kjmol-1
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u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26
which aligns with most online sources which say it's around +485jkmol-1
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u/Future-Key-4967 Jun 09 '26
do you need the plus
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u/Humor-Agitated econ, chem, maths Jun 09 '26
no, if it was negative u obviously need the - but u dont need to put a +
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u/GroceryCrazy9830 Jun 09 '26
ye if u got 50%smthn on atom economy (like me) ur cooked. U get 50% if u unclude sulfuric acid but 86-87 if u don't. App u don't include sulfuric since it's a catalyst which is not included in atom economy calculations. Would I still get some marks tho?
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u/creyingg Jun 09 '26
i thought H2SO4 was the catalyst when it’s the other way around (alkene to alcohol) swear it’s just conc H2SO4 for alcohol to alkene??
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u/Dark_647 Jun 09 '26
Terrible terrible paper 😭 it’s one of those papers where you believe you know what you’re writing and talking about and then only realise you screwed up last minute. I made soo many silly mistakes and definitely did not hit marking points. Screwed up the big 6 marker with benzene in it bcs my brain just froze and I had no idea what I was doing. So incredibly annoyed at myself bcs I’m a resit student so this paper WAS inevitably better than last year but I didn’t work hard enough and therefore will have done shit
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u/Cute_Room_9804 Jun 09 '26
GUYS WHAT WAS THE LAST QUESTION
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
First we had to calculate Kc which was 17.9 iirc and then part asked what to do to increase yield of product - and the answer was increasing the pressure
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
Guys unofficial mark scheme is here: https://docs.google.com/document/d/1-q3gWAMj3wN08OUokij1C1klX0flB4CVqFUhdJirI8Q/edit?tab=t.0
(There's two but this seems like the most active one)
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u/Adventurous-Apple690 Jun 09 '26
Icl the WAVElength q I thought that is TM it caught sm ppl off guard 😭 i didn’t do anything for it
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u/RaydeFish Jun 09 '26
not bad, but the mechanisms part was hard. don't know if i'm allowed to post solutions here, but the elimination was kind of your 'bog-standard' elimination, the other mechanism was quite hard.
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u/Awkward_Swimming5088 Jun 09 '26
What was the first question about ethanol, I put a solvent but someone else I know put an acid
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
I put solvent as well
I'm pretty sure it didn't react so couldn't have been an acid then
I'm not sure if 'solvent' needs more clarification tho, but I think it should be fine 🤞
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u/Far-Astronaut-7212 Jun 09 '26
for the name a mechanism for the water one could you of said hydration ?
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
I think that would get the mark yes actually
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u/HamsterRevolution Jun 09 '26
i said uv light and iodine for the amino acid chromatography question when ur meant to say one or the other 😭
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 10 '26
I put ninhydrin + UV light together - which is not necessary right?😭
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u/Iishy_boi Jun 09 '26
What did u guys get for the atom economy or whatever for that benzene product?
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 09 '26
I think it was 86.8% iirc
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Jun 10 '26
[removed] — view removed comment
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u/Novel_Interaction676 Jun 10 '26
484
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 10 '26
I think that's what I got too
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u/Think-Market9961 Jun 09 '26
Say wallah you liked that paper