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Question
How would you distinguish the following pair of compounds?
n-propyl alcohol and iso-propyl alcohol
Distinguish Between
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Solution
| Test/Property | n-propyl alcohol | iso-propyl alcohol |
| Iodoform Test | n-Propyl alcohol does not give the iodoform test. | iso-Propyl alcohol gives a positive iodoform test with yellow precipitate. |
| Structure Type | It is a primary alcohol (–OH group attached to a primary carbon). | It is a secondary alcohol (–OH group attached to a secondary carbon). |
| Molecular Structure | Has a straight chain of three carbon atoms. | Has a branched structure with a central carbon bonded to two methyl groups. |
| Boiling Point | Slightly higher boiling point due to linear structure. | Slightly lower boiling point due to branching. |
| Oxidation Product | On oxidation, forms propanoic acid. | On oxidation, forms acetone (a ketone). |
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