Saved Bookmarks
| 1. |
Give simple chemical tests to distinguish between the following pairs of compounds: (i) Phenol and Benzoic acid. (ii) Propan-1-ol and Propan-2-ol. |
|
Answer» (i) C6H5OH + NaHCO3 No effervescence C6H5COOH + NaHCO3 → C6H5COONa + H2O + CO2 (effervescence ) (ii) CH3-CH2 –CH2OH → No Turbidity CH3-CHOH–CH3 → Turbidity produced with in five minutes 1)FeCl3 test for benzoic acid gives violet colour and that for phenol gives some other colour like yellow2)for alcohols do the test of lucas reagent(Zn+HCl) .... it will show cloudy effect on secondary alc. without heating where as ....primary alcohols show cloudiness on heating only |
|