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CognitoAlcohols — structure and reactions
Key facts & methods
Alcohol homologous series — fill in the table
| Term | Detail |
|---|
| Functional group | |
| General formula | |
| Methanol | |
| Ethanol | |
| Propanol | |
| Butanol | |
| Boiling point trend | |
| Solubility | |
Production of ethanol — fill in the table
| Method | Equation & conditions | Advantages / disadvantages |
|---|
| Fermentation | | |
| Hydration of ethene | | |
Reactions of alcohols — fill in the table
| Reaction | Details |
|---|
| Combustion | |
| Oxidation | |
| Reaction with sodium | |
| Dehydration | |
Uses of ethanol — fill in the table
| Use | Detail |
|---|
| Fuel | |
| Solvent | |
| Alcoholic drinks | |
| Hand sanitisers | |
| Biofuel | |
Exam questions — 4 questions · 10 marks · AQA 8462 style
⚡ Show all working — the AI marks against the AQA mark scheme. Method marks awarded for correct working even if the final answer is wrong.
1 markAlcohol functional groupAQA 8462
What is the functional group in alcohols?
A -COOH (carboxyl group)
B -OH (hydroxyl group)
C -C=C- (double bond)
D -NH2 (amino group)
3 marksFermentation vs hydrationAQA 8462
Compare the production of ethanol by fermentation and by hydration of ethene. Give one advantage and one disadvantage of fermentation. (3 marks)
+30 XP
1 markEthanol combustionAQA 8462
The complete combustion of ethanol produces:
A Carbon monoxide and water
B Carbon dioxide and water only
C Carbon dioxide, water and ethanoic acid
D Carbon and water
4 marksOxidation of ethanolAQA 8462
Describe what happens when ethanol is oxidised. Name the product and write a word equation. How is this relevant to vinegar production? (3 marks)
+40 XP
Quick recall flashcards
Module complete! 🎉
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