Learning objective
Use test-tube reactions to identify alcohols, aldehydes, alkenes and carboxylic acids.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
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Topic
Organic analysis
Subtopic
Test-tube reactions and mass spectrometry
Study support
Understand this objective
Quick explanation
Use test-tube reactions to identify alcohols, aldehydes, alkenes and carboxylic acids
- This point belongs to Organic analysis, especially Test-tube reactions and mass spectrometry.
- You need to be able to use test-tube reactions to identify alcohols, aldehydes, alkenes and carboxylic acids.
- The key ideas to know are reactions, alkenes, and test-tube.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Test-tube reactions and mass spectrometry to exam-style questions, flashcards, and revision notes for Organic analysis.
Quick student answer
Which of the following reagents can be used to distinguish between an alcohol and a carboxylic acid?
Direct answer
Potassium dichromate can oxidize alcohols to aldehydes or carboxylic acids, while carboxylic acids remain unchanged.
Key terms
- Tollens' reagent: A solution of silver nitrate in ammonia used to test for aldehydes.
- Bromine water: A solution of bromine in water used to test for alkenes and phenols.
Common trap
Confusing alcohols with carboxylic acids: Use specific tests like the reaction with sodium bicarbonate to confirm the presence of a carboxylic acid.
Related questions
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Flashcard prompts
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Revision tools
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Interpret mass spectra to identify molecular ion peaks.
Test-tube reactions and mass spectrometry
- Use fragmentation evidence to support structural identification.
Test-tube reactions and mass spectrometry
- Required practical: tests for alcohol, aldehyde, alkene and carboxylic acid.
Test-tube reactions and mass spectrometry
- Use infrared absorption data to identify functional groups.
Infrared spectroscopy
- Interpret the fingerprint region by comparison with reference spectra.
Infrared spectroscopy