A formulator is choosing an alcohol for a water-based cleaning fluid. Two unlabelled bottles contain propanol and butanol.
The formulator adds 15 cm³ of each alcohol to separate samples containing 50 cm³ of water. Each mixture is shaken and then left to settle.
| Bottle | Observation after settling | pH of the aqueous layer |
|---|---|---|
| P | One clear layer | 7 |
| Q | Two layers | 7 |
Explain which bottle contains propanol and which bottle contains butanol. State what the pH results show about the aqueous solutions of the two alcohols.
97 exam-style questions on AQA GCSE Chemistry 7.2 Reactions of alkenes and alcohols, covering 7.2.1 Structure and formulae of alkenes, 7.2.2 Reactions of alkenes, 7.2.3 Alcohols, 7.2.4a Carboxylic acids, and 7.2.4b Carboxylic acids as weak acids. Each one has a worked solution and a mark scheme showing where the marks go.