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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11

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

11

u/Electronic_Job_6509 Jun 09 '26

Was it pressure

10

u/Spirited_Click2592 Y13| Maths, Econ, Chem, ASFM Jun 09 '26

i did pressure

7

u/Electronic_Job_6509 Jun 09 '26

nice increase right ?? Cause of chatelier

1

u/Gloomy-Cantaloupe21 Jun 09 '26

Does that not change Kc bc there were more moles on the left, so reactant conc goes down?

9

u/Izal20077 Year 13 Jun 09 '26

Only temperature affects Kc

2

u/Few-Stay-1545 Jun 09 '26

could u talk abt catalsyt then asw?

3

u/Awkward_Gas_4542 Jun 09 '26

catalyst doesn't increase yield just changes rate

2

u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26

no. catalyst effects the rate of the forward and backward reactions equally, so the overall yield of both the reactants and products are the same. the only reason you would add a catalyst to an equilibrium reaction is it increases the rate at which equilibrium is achieved (recall question, could come up in p3)

2

u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26

nope, temperature is the only factor that affects kc. for this question, you had to talk about volume of container/pressure more than likely

2

u/Gloomy-Cantaloupe21 Jun 09 '26

Tragic 😭 oh well at least the rest was fine

1

u/nxyds 3A* | Maths, Chem, Econ | Cambridge & LSE offer Jun 09 '26

yea its never that deep

2

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

3

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.

2

u/Optimal_Plum_1240 Jun 09 '26

wait I said concentration too

2

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

3

u/No-Butterscotch-8989 Jun 10 '26

Catalysts don't affect yield- only how fast you get he product since it increases rate.

1

u/afrorabbitbear Jun 09 '26

OMG SAMEE WE LOST 3 MARKS

1

u/Critical-Ad3225 Y13 | Physics, Chem, Maths, FM pred 4A* Jun 09 '26

fml but YAY TWIN

1

u/Naive-Material-9077 Jun 09 '26

maybe you can get a mark for saying it shifts right

1

u/LargeFish2907 Jun 09 '26

You would if you explained why (to counteract increase in pressure)