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An organic compound (A) of molecular formula C2H6O on reaction with acidified K2Cr2O7 gives (B) of molecular formula C2H4O which on further oxidation gives (C) of molecular formula C2H4O2 . Compound (C) reacts with (A) in the presence of conc. H2SO4 gives (D) of molecular formula C4H4O2 . Identify A,B,C,D and explain the reaction Involved.

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1. An organic compound (A) of molecular formula C2H6O is identified as ethanol.

2. Ethanol on oxidation with acidified K2Cr2Ogives 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)

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