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Question
How will you distinguish between propan-1-ol and propan-2-ol?
Distinguish Between
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Solution
| Sr. No. | Propan-1-ol | Propan-2-ol |
| 1. | It is a primary alcohol. | It is a secondary alcohol |
| 2. | On oxidation with acidified potassium dichromate, it forms an aldehyde and then an acid. | On oxidation, it forms a keton |
| 3. | It gives a negative iodoform test (no yellow precipitate). | It gives a positive iodoform test (yellow precipitate formed). |
| 4. | Reacts slowly or not at room temperature in the Lucas test. | In the Lucas test, it reacts quickly, leading to turbidity or layer separation. |
| 5. | Has a hydroxyl (–OH) group on the terminal (first) carbon. | Has a hydroxyl (–OH) group on the middle (second) carbon. |
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