Official OCR A Chemistry A-level Thread

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Itsnotrickeyx
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OCR Chemistry A,

I couldn’t find an official thread and the exams in 3 days I am actually retaking the exam wish everyone luck lets try to put forward ideas and questions and help everyone get those A*/As

A Level Exam Dates H432/1 Periodic table, elements and physical chemistry (2h 15min) Tue 5th June

H432/2 Synthesis and analytical techniques (2h 15min) Tue 12th of June

H432/3 Unified Chemistry (1h 30min) Wed 20th June

Spec: http://www.ocr.org.uk/Images/171720-...try-a-h432.pdf

Specimen papers:


Last year papers
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Lani_5678
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Omdz thank youu!! Ive been looking everywhere for specimen papers for unified chem but couldnt find them😊😊😊
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Simi17
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Allery chemistry for last minute revision really good on YouTube https://www.youtube.com/playlist?lis...paEdnPqMj21xeD
https://www.youtube.com/playlist?lis...txUaKmaj1XvXKD
Physics and maths tutor for subject specific questions : http://www.physicsandmathstutor.com/...a-level-ocr-a/
Chemrevise has one of the best notes I have ever found online : https://chemrevise.org/ocr-revision-guides/
Tailored Tutors ( you have to pay for this resource) good videos on calculations
Hope it helps !! 🤗😊 I’m so stressed the exam is tomorrow !!! ☹️☹️🔫🔫
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sugar_lips
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I'm just hoping the calculations aren't too bad😕
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salmanrashid435
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Could anyone please send over the practice papers for periodic table elements and physical chemistry. I have set 2 but not set 1
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mathschemistry11
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hi guys, what practicals can they ask us on the organic paper on tuesday? has anyone posted any predictions ?
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bantaleg
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https://www.thestudentroom.co.uk/sho....php?t=5424576

Hey everyone I made an official thread for tuesdays exam check it out and good luck! See you there!
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SamKent19
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Quick question on this.

At low pH : Acid/H+ reacts with A– AND equilibrium (position) shifts towards HA (to give a red colour)

At high pH: Alkali/OH– reacts with HA/H+ AND equilibrium (position) shifts towards A– (to give a yellow colour) 

1. This is a buffer right? Instead of saying it moves to A- on the second one can you say equil move to increase H+ concentration?
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Itsnotrickeyx
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(Original post by ReadySalted28)
Quick question on this.

At low pH : Acid/H+ reacts with A– AND equilibrium (position) shifts towards HA (to give a red colour)

At high pH: Alkali/OH– reacts with HA/H+ AND equilibrium (position) shifts towards A– (to give a yellow colour) 

1. This is a buffer right? Instead of saying it moves to A- on the second one can you say equil move to increase H+ concentration?
Indicators are weak acids and weak acids by themselves are buffer so yeah.
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