OCR A - A-Level Chemistry - hard exam questions for P1 2024

Alevel Chemistry paper 1 in 5 days, let's gather some of the hardest questions for physical chem (OCR SPEC). Pls include a link/ screenshot of the question and the mark scheme if you can :smile:

(edited 1 year ago)

Reply 1

Amina123124

Has anyone got access to the 2023 ocr chemistry a level papers? My college hasn't given us access

Reply 2

Jack39

https://docmerit.com/doc/show/a-level-ocr-chemistry-a-paper-1-june-2023-question-paper

Reply 3

Alicia38818824

Original post by Amina123124

Has anyone got access to the 2023 ocr chemistry a level papers? My college hasn't given us access

https://textbooks.tommo.team/-%202023%20Papers/ there’s no mark scheme tho:/

Reply 4

A1937

Whats the answer for the concentration to that graph question of acid and base

Reply 5

chanceyy

Original post by A1937

Whats the answer for the concentration to that graph question of acid and base

i got something like 0.135

Reply 6

A1937

Original post by chanceyy

i got something like 0.135

I got 0.069 😭 or something. **** did you use the equivalence point to find volume. Then calculate moles from that?

Reply 7

Unknown8358

Original post by A1937

Whats the answer for the concentration to that graph question of acid and base

0.1388

Reply 8

chanceyy

Original post by A1937

I got 0.069 😭 or something. **** did you use the equivalence point to find volume. Then calculate moles from that?

yeah i worked out moles using volume and concentration given then used the equivalence point volume to work out the conc x

Reply 9

A1937

Original post by chanceyy

yeah i worked out moles using volume and concentration given then used the equivalence point volume to work out the conc x

So how tf did I get 0.069 😭 I did that too

Reply 10

ZakM893

what did you get for the redox question

Reply 11

Rishiciar

Original post by chanceyy

i got something like 0.135

I got 0.14

Reply 12

ZakM893

Original post by Rishiciar

I got 0.14

same I rounded it.

Reply 13

chanceyy

Original post by ZakM893

same I rounded it.

think it was to 3 significant figures i believe

Reply 14

A.N.H tg ty

Original post by chanceyy

i got something like 0.135

I got 0.139

Reply 15

STOOPID12

someone do an unofficial mark scheme

Reply 16

Rishiciar

Original post by chanceyy

think it was to 3 significant figures i believe

The titration curve question? If so I read that about 4 times and I’m certain it didn’t say anything about significant figures.

Reply 17

ZakM893

Original post by Rishiciar

The titration curve question? If so I read that about 4 times and I’m certain it didn’t say anything about significant figures.

yeh same I think that was some other questions

Reply 18

chanceyy

Original post by Rishiciar

The titration curve question? If so I read that about 4 times and I’m certain it didn’t say anything about significant figures.

that’s fine then, it’ll be fine whatever answer u get :smile:

Reply 19

mathchembiop

Original post by Rishiciar

The titration curve question? If so I read that about 4 times and I’m certain it didn’t say anything about significant figures.

if you looked at the concentration of the other one, it was given to 3sf, hence why you assume its 3sf for the conc of this as well

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