( 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 ]