Edexcel A Level Chemistry Paper 3 Tuesday 21th June 2024 9CH0/02

Username00000001

8

Exam chat for Paper 3

Reply 1

weewoo.

7

Probs halide test, iodine clock reaction, organic synthesis, *****y 30 mark nmr question (I joke)

Reply 2

UtterlyUseless69

12

I have posted some useful links in my posts on the attached thread here: https://www.thestudentroom.co.uk/showthread.php?t=7482494&p=99645307&page=1#post99645307

If anyone here has any A level chemistry questions, I am very happy to answer them. I currently study chemistry at uni, having sat my A levels 2 years ago and achieved an A* in Edexcel A level chemistry.

Reply 3

1237tjdgvhja

6

Would adore any specific tips on how to revise chempaper 3 in the little time we have left, paper 1 and 2 have been ok but I need this one to be ok as well if I want the grades I need

Reply 4

UtterlyUseless69

12

Original post by 1237tjdgvhja

Would adore any specific tips on how to revise chempaper 3 in the little time we have left, paper 1 and 2 have been ok but I need this one to be ok as well if I want the grades I need

I general, I would pick the most recent paper you have access to, or the hardest paper (as per your peers) to attempt, mark and ask about here on TSR.

I would say 2022 paper 3 has a good balance of being recent and challenging.

With regards to practicals, I think there have been quite a few predictions made in light of the questions that came up on papers 1 and 2. Ion tests and the iodine clock reaction are a handful that I’ve heard, so finding the practical sheets for core practicals 7, 13a, 13b and 15 is recommended.

The core practical sheets can be found here under the dropdown titled “worksheet”: https://qualifications.pearson.com/en/qualifications/edexcel-a-levels/chemistry-2015.coursematerials.html#%2FfilterQuery=category:Pearson-UK:Category%2FTeaching-and-learning-materials

The practical sheets should have example questions and expected answers that could easily come up in your exams.

(edited 1 year ago)

Reply 5

1237tjdgvhja

6

Original post by UtterlyUseless69

I general, I would pick the most recent paper you have access to, or the hardest paper (as per your peers) to attempt, mark and ask about here on TSR.
I would say 2022 paper 3 has a good balance of being recent and challenging.
With regards to practicals, I think there have been quite a few predictions made in light of the questions that came up on papers 1 and 2. Ion tests and the iodine clock reaction are a handful that I’ve heard, so finding the practical sheets for core practicals 7, 13a, 13b and 15 is recommended.
The core practical sheets can be found here under the dropdown titled “worksheet”: https://qualifications.pearson.com/en/qualifications/edexcel-a-levels/chemistry-2015.coursematerials.html#%2FfilterQuery=category:Pearson-UK:Category%2FTeaching-and-learning-materials
The practical sheets should have example questions and expected answers that could easily come up in your exams.

Thank you, I was able to do most of the papers for all the other bio and chem exams apart from this one so ill try and at least look through as many as possible. I really hope your predictions are right because theres a couple random things ik well. Going to look at 2022 paper 3 now!

Reply 6

bwnkve

3

do you think there'll be any big buffer calcs and/or titration curves Qs? i can't really remember paper 1 and i suck at those lol

Reply 7

UtterlyUseless69

12

Original post by bwnkve

do you think there'll be any big buffer calcs and/or titration curves Qs? i can't really remember paper 1 and i suck at those lol

They are quite a common style of question on paper 3. I wouldn’t be surprised if you got something like that.

I think the 2020 and 2022 papers have some acid-base equilibria questions worth looking through. Feel free to ask about them here if they prove problematic in any way

Reply 8

delocalised34

10

Original post by bwnkve

do you think there'll be any big buffer calcs and/or titration curves Qs? i can't really remember paper 1 and i suck at those lol

I mean there was a blood buffer one in paper 1 but i doubt it counts maybe some benzene chemistry in this paper tho

Reply 9

bwnkve

3

Original post by UtterlyUseless69

They are quite a common style of question on paper 3. I wouldn’t be surprised if you got something like that.
I think the 2020 and 2022 papers have some acid-base equilibria questions worth looking through. Feel free to ask about them here if they prove problematic in any way

could you explain question 8.b. on this paper? i tried to make sense of it using the mark scheme but i don't understand why you use the value of Ka as the value of concentration of the salt 😢 (my teacher rushed through acid-base i know its probably quite simple lol)
https://pmt.physicsandmathstutor.com/download/Chemistry/A-level/Past-Papers/Edexcel/Paper-3/June%202022%20QP%20-%20Paper%203%20Edexcel%20Chemistry%20A-level.pdf
thank you so much for offering solutions and explanations btw, you're an absolute legend for this!

Reply 10

Slippinn'Jimmy

5

Original post by bwnkve

could you explain question 8.b. on this paper? i tried to make sense of it using the mark scheme but i don't understand why you use the value of Ka as the value of concentration of the salt 😢 (my teacher rushed through acid-base i know its probably quite simple lol)
https://pmt.physicsandmathstutor.com/download/Chemistry/A-level/Past-Papers/Edexcel/Paper-3/June%202022%20QP%20-%20Paper%203%20Edexcel%20Chemistry%20A-level.pdf
thank you so much for offering solutions and explanations btw, you're an absolute legend for this!

Ka isn't the salt concentration, you do Ka divided by H+ to get CH3COO- / CH3COOH (using the normal Ka expression).

This gets you the ratio of salt to acid for that particular pH. You're given the final volume as 500cm3 so you just plug that into the ratio of 0.872:1

Reply 11

UtterlyUseless69

12

Original post by bwnkve

could you explain question 8.b. on this paper? i tried to make sense of it using the mark scheme but i don't understand why you use the value of Ka as the value of concentration of the salt 😢 (my teacher rushed through acid-base i know its probably quite simple lol)
https://pmt.physicsandmathstutor.com/download/Chemistry/A-level/Past-Papers/Edexcel/Paper-3/June%202022%20QP%20-%20Paper%203%20Edexcel%20Chemistry%20A-level.pdf
thank you so much for offering solutions and explanations btw, you're an absolute legend for this!

This question was an @rse.

Solution

Edit - a sidenote for when you’ve read the full solution

(edited 1 year ago)

Reply 12

UtterlyUseless69

12

Original post by Slippinn'Jimmy

Ka isn't the salt concentration, you do Ka divided by H+ to get CH3COO- / CH3COOH (using the normal Ka expression).
This gets you the ratio of salt to acid for that particular pH. You're given the final volume as 500cm3 so you just plug that into the ratio of 0.872:1

You are correct. Nicely done.

Edexcel A Level Chemistry Paper 3 Tuesday 21th June 2024 9CH0/02

Quick Reply

Related discussions

Articles for you