1. An organic compound (A) of molecular formula C2H6O is identified as ethanol.
2. Ethanol on oxidation with acidified K2Cr2O7 gives first acetaldehyde as (B) which on further oxidation gives acetic acid as (C)
3. Ethanol reacts with acetic acid in the presence of conc. H2SO4 , esterification take place to give ethyl acetate as product (D)