OCR A Level Chemistry A
OCR A Level Chemistry A Organic Analysis Exam Questions
Free OCR A Level Chemistry A exam questions on Organic Analysis, with mark schemes. Covers chromatography, functional group tests and NMR spectroscopy.
Organic Analysis exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
StemUp mark scheme flashcards
OCR A Level Chemistry A H432 Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
From £10.99View flashcards
About OCR A Level Chemistry A Organic Analysis
This topic covers advanced analysis.
What you need to know
- Chromatography TLC and gas chromatography.
- Tests Identifying functional groups.
- Carbon-13 NMR Number of carbon environments.
- Proton NMR Splitting, integration and D₂O.
Common mistakes in Organic Analysis
- Misusing the n+1 rule.
- Forgetting TMS as standard.
- Counting identical environments twice.
Try three Organic Analysis exam-style questions
1. State why TMS is used in NMR. (1 mark)
Show the mark scheme answer
It gives a single reference peak at 0 ppm.
2. A peak is a triplet. How many H on the adjacent carbon? (1 mark)
Show the mark scheme answer
Two.
3. State why D₂O is used. (1 mark)
Show the mark scheme answer
It identifies O-H or N-H protons, whose peaks disappear.
Organic Analysis FAQs
What does this topic cover?
Chromatography, tests and NMR.
Is NMR data given?
Yes, chemical shift tables are on the data sheet.
What does integration show?
The relative number of protons.
Revise this topic with flashcards: OCR A Level Chemistry A H432 Flashcards, with mark scheme answers for Anki and Quizlet.
