( iii) From diazonium salts
( iv) From cumene
Physical Properties of Alcohols
1. Lower alcohols are colourless liquids, members from C5 – C11 are oily liquids and higher members are waxy solids.
2. The hydroxyl groups in alcohols can form H-bonds with water, so alcohols are miscible with water. The solubility decreases with increase in molecular mass.
3. Boiling points of alkanes are higher than expected because of the presence of intermolecular hydrogen bonding in the polar molecules.
[ The boiling point decreases in the order 1 ° > 2 ° > 3 ° as the van der Waals’ forces of attraction decreases ]