OCR A Level Chemistry A
OCR A Level Chemistry A Aromatic Compounds, Carbonyls and Acids Exam Questions
Free OCR A Level Chemistry A exam questions on Aromatic Compounds, Carbonyls and Acids, with mark schemes. Covers benzene, phenols, aldehydes, ketones, carboxylic acids and esters.
Aromatic Compounds, Carbonyls and Acids 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.
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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.
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About OCR A Level Chemistry A Aromatic Compounds, Carbonyls and Acids
This topic covers aromatic and carbonyl chemistry.
What you need to know
- Benzene Delocalised model and electrophilic substitution.
- Phenols Acidity and bromination.
- Carbonyls Oxidation, NaBH₄ reduction and HCN addition.
- Acids and esters Esterification, hydrolysis and acyl chlorides.
Common mistakes in Aromatic Compounds, Carbonyls and Acids
- Using Kekulé to explain stability.
- Saying ketones give positive Tollens'.
- Forgetting a catalyst in esterification.
Try three Aromatic Compounds, Carbonyls and Acids exam-style questions
1. Explain why benzene needs a halogen carrier to react with bromine. (1 mark)
Show the mark scheme answer
Its delocalised electrons are less dense than a localised pi bond.
2. State the test for aldehydes. (1 mark)
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Tollens' reagent gives a silver mirror.
3. Name the reagents for ester formation from a carboxylic acid. (1 mark)
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Alcohol with concentrated sulfuric acid catalyst.
Aromatic Compounds, Carbonyls and Acids FAQs
What does this topic cover?
Benzene, phenols, carbonyls and acid derivatives.
What is 2,4-DNP used for?
Detecting carbonyl groups.
Why is phenol more reactive than benzene?
Oxygen lone pair donates into the ring.
Revise this topic with flashcards: OCR A Level Chemistry A H432 Flashcards, with mark scheme answers for Anki and Quizlet.
